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19 Nov
2020

# Discussion 1 : Please review the attached article titled Aeroallergen Sensitization in Healthy Children:…

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Discussion 1 : Please review the attached article titled Aeroallergen Sensitization in Healthy Children: Racial andSocioeconomic CorrelatesPreview the document by Stevenson, …Gupta …and Hershey et al., published in the Journal of Pediatrics in 2007. After reading the article, discuss the sociodemographic factors resulting in African-American children having a higher prevalence of allergic sensitization. You may use your clinical experience or/and cite additional sources if you wish.
The owner of Original Italian Pizza restaurant chain wants to understand which variable most strongly influences the sales of his
The owner of Original Italian Pizza restaurant chain wants to understand which variable most strongly influences the sales of his specialty deep-dish pizza. He has gathered data on the monthly sales of deep-dish pizzas at his restaurants and observations on other potentially relevant variables for each of several outlets in central Indiana. These data are provided in the file P10_04.xlsx. Estimate a simple linear regression equation between the quantity sold (Y) and each of the following candidates for the best explanatory variable: average price of deep-dish pizzas (X1), monthly advertising expenditures (X2), and disposable income per household in the areas surrounding the outlets (X3). Round your answers for intercept coefficients to the nearest whole number and slope coefficients to two decimal places, if necessary. If your answer is negative number, enter “minus” sign.
Answer c : the odds ratio for patients 65 years of age or older were almost 3 times those observed
Answer c : the odds ratio for patients 65 years of age or older were almost 3 times those observed for patients younger than 65 years of age Answer D: the odds of death for patients 50-64 years of age were almost 3 times those observed for patients younger than 50 years of age but the relationship was not statistically significant
Consider estimating an unknown mean from a set of n scalar measurements assumed to be normally distributed, using a conjugate
Consider estimating an unknown mean from a set of n scalar measurements assumed to be normally distributed, using a conjugate normal-inverse-gamma prior with parameters µ0; ν; α; β. Derive conditions on the relationship between the prior mean µ0 andthe true (unknown) parameter µ∗ that guarantee that the mean squared error (MSE)of the Bayesian posterior mean estimator is lower than that of the maximum likelihoodestimator (MLE). Hint: This is best approached by expressing the Bayesian posterior mean as a linearcombination of the MLE and the prior mean.
In 2010, an online security firm estimated that 74% of computer users don’t change their passwords very often. Because this
In 2010, an online security firm estimated that 74% of computer users don’t change their passwords very often. Because this estimate may be outdated, suppose that you want to carry out a new survey to estimate the proportion of students at your school who do not change their password. You would like to determine the sample size required to estimate this proportion to within a margin of error of 0.05 with 95% confidence.(a) Using 0.74 as a preliminary estimate for the proportion, what is the required sample size if you want to estimate this proportion with a margin of error of 0.05? (Give your answer as a whole number.)n ≥ ______ (b)Calculate the required sample size if no preliminary estimate for the proportion is used. (Give your answer as a whole number.)n ≥ _______
Police response time to an emergency call is the difference between the time the call is first received by the
Religion and Theology Assignment Writing ServicePolice response time to an emergency call is the difference between the time the call is first received by the dispatcher and the time a patrol car radios that it has arrived at the scene. Over a long period of time, it has been determined that the police response time has a normal distribution with a mean of 6.8 minutes and a standard deviation of 1.9 minutes. For a randomly received emergency call, find the following probabilities. (For each answer, enter a number. Round your answers to four decimal places.)(a) the response time is between 3 and 8 minutes(b) the response time is less than 3 minutes(c) the response time is more than 8 minutes
It has been suggested that the second-shift workers variability Second Shift First Shift in their output levels (units/week)
It has been suggested that the second-shift workers variability Second Shift First Shift in their output levels (units/week) than the first-shift workers. To test whether this hypothesis is true, you want to collect samples to test the hypothesis. Below, you are given the results of two independent random samples. Use α = 0.05. (15 points) Sample Size 9 7 Sample Mean 520 540 Sample Variance 38 20 a) Formulate the hypotheses. (5 points)b) Calculate the test statistics (F value) and test the hypotheses. What is the conclusion? (10 points)
I have the following information to enter data for SPSS but I only have two columns of data. How do
I have the following information to enter data for SPSS but I only have two columns of data. How do I enter the following information in SPSS data view? this is the information:Name the variables exactly as shown and make sure to enter the value labels for the variable “Class.” Value labels for the Variables “Class” are: 0=psychology; 1=history; 2=biology0 750 831 811 882 822 80
Batting Averages Random samples of batting averages from the leaders in both leagues prior to the All-Star break are shown.
Batting Averages Random samples of batting averages from the leaders in both leagues prior to the All-Star break are shown. At the 0.01 level of significance, can a difference be concluded? National: 0.313 0.346 0.344 0.338 0.329 0.311 0.354 American: 0.312 0.322 0.349 0.355 0.350 0.315 0.326 Find the critical value(s). Enter the answers in ascending order and round the answers to three decimal places.
1) Giving a test to a group of students, the grades and gender are summarized below Male 3 17 8
1) Giving a test to a group of students, the grades and gender are summarized below Male 3 17 8 28 Female 18 12 13 43 Total 21 29 21 71Let p present the percentage of all male students who would receive a grade of B on this test. Use a 80% confidence interval to estimate p to three decimal places. Enter your answer as a tri-linear inequality using decimals (not percents). —— < < ——-2) A market research firm is hired to estimate the percent of adults living in a large city who have cell phones. Five hundred randomly selected adult residents in this city are surveyed to determine whether they have cell phones. Of the 500 people surveyed, 415 responded “yes, they own cell phones.”Using a 95% confidence level, compute a confidence interval estimate for the true proportion of adult residents of this city who have cell phones.
i need help on Give 3 examplesdifferent age cohorts Biological, Sociocultural
i need help on Give 3 examplesdifferent age cohorts Biological, Sociocultural
A physical geographer is preparing to take soil samples from an area that is 35% marshland. She suspects that environmental
A physical geographer is preparing to take soil samples from an area that is 35% marshland. She suspects that environmental degradation is most severe in the marshland portion of the study area, so she wants to ensure that area is oversampled, and the non-marshland area under sampled.(a) What type of spatial point sampling should she apply? (2′)(b) If she aimed to collect 200 samples, how many samples can she collect from the marshland area and the non-marshland area, respectively, using this sampling approach? Provide the procedures for your calculation. (4′)
1. Math SAT scores (Y) are normally distributed with a mean of 500 and a standard deviation of 100. An
1. Math SAT scores (Y) are normally distributed with a mean of 500 and a standard deviation of 100. An evening school advertises that it can improve students’ scores by roughly a third of a standard deviation, or 30 points, if they attend a course which runs over several weeks. (A similar claim is made for attending a verbal SAT course.) The statistician for a consumer protection agency suspects that the courses are not effective. She views the situation as follows: 0 ∶ = 500 . 1 ∶ = 530. a. Using R/R-studio, sketch the two distributions under the null hypothesis and the alternative hypothesis. (5 points)b. The consumer protection agency wants to evaluate this claim by sending 50 students to attend classes. One of the students becomes sick during the course and drops out. What is the distribution of the average score of the remaining 49 students under the null, and under the alternative hypothesis? (5 points)c. Assume that after graduating from the course, the 49 participants take the SAT test and score an average of 520. Is this convincing evidence that the school has fallen short of its claim? What is the p-value for such a score under the null hypothesis? (10 points)

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