1. Math
  2. Statistics And Probability
  3. 1 2 3 4...

Question: 1 2 3 4...

Question details

1.

X) 7.1.5 2 A Find the critical value za/2 that corresponds to the given confidence level. 87% Zu/2-D (Round to two decimal places as needed.) as et Enter your answer in the answer box and then click Check Answer. All parts showing Clear All Previous

2.

Salvador Villalpando Homework: 7-1: Estimating a Population Proportion Save Score: 3.33 of 10 pts 9 of 11 (8 complete) Y HW Score: 51.62%, 58.33 of 1 13 pts a Assigned Media Question Help A clinical trial tests a method designed to increase the probability of conceiving a girl. in the study 400 babies were born, and 340 of them were girts. Use the sample data to construct a 99% confidence interval estimate of the percentage o girls born. Based on the result does he mehod ap ear to pee eche LI < p [] (Round to three decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. Clear All Check Answer Previous Next. 11:15 AM /26/2019

3.

7.1.18 ! Assigned Media | Question Help A genetic experiment with peas resulted in one sample of offspring that consisted of 429 green peas and 156 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. It was expected that 25% of the offspring peas would be yellow. Given hatte ercenta eo atsping yellow pea s ot 25, e res ts ntradī expectations a. Construct a 95% confidence interval. Express the percentage in decimal form, p <啿(Round to three decimal places as needed.) Enter your answer in the edit fields and then click Check Answer Clear All Check Answer remaining Next Previous 11:17 AM 9簓脈小 1/26/2019

b. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations? Yes, the confidence interval does not include 0.25, so the true percentage could not equal 25% No, the confidence interval includes 0.25, so the true percentage could easily equal 25% Question is complete. Tap on the red indicators to see incorrect answers. All parts showing Previous e m

4.

Assigned MediaE Question Help You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume hat you want to be 99% confident hat the sample percentage is within 3 5 percentage points of the ru population en a e mpete parts a and (b) below a. Assume that nothing is known about the percentage of passengers who prefer aisle seats Round up to the nearest integer.) Enter your answer in the ansiwer box and then click Check Answer part Clear All Check Answer Previous Next> 11:18 AM 1/26/2019

b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat n- (Round up to the nearest integer.) Enter your answer in the answer box and then click Check Answer All parts showing Clear All Previous

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution