A survey of 200 senior citizens was undertaken and it was found that 26 of them had the flu vaccine this year. Do these data suggest that the proportion of senior citizens who get the flu vaccine is significantly less than 21%? Test at \(\alpha = 0.10\). Round your answers to three decimal places, and round any interim calculations to four decimal places.1. What is the test statistic? **Answer:** -2.77782. Using your answer from the previous question, find the p-value. **Answer:** 0.00273. What is the critical value for this test? **Answer:** (This part is left blank for user input)

The value oof x is 26, the value of n is 200 and the value of hypothesized proportion is 0.21.

Answered: A survey of 200 senior citizens was…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Calculate the test statistic for the given scenario. Round your answer to 3 decimal places p-p Vpg/n A company claims the 85% of their employees are happy with their work environment. A survey of 50 employees is taken in which 45 say they are happy with their work environment.
Please don't forget to round
X10.2.21-T Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 247 of 700 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a=0.01 level of significance. Because npo (1- Po) = 172.5 > 10, the sample size is less than 5% of the population size, and the sample can be reasonably assumed to be random, the requirements for testing the hypothesis are satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? versus H,: Ho: (Type integers or decimals. Do not round.)
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ixd s 67 Dr 5. Find the percentage of data points that lie above z 1.03. Draw a picture to support your work.
A publisher reports that 61 % of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 320 found that 55 % of the readers owned a particular make of car. Determine the P-value of the test statistic. Round your answer to four decimal places. Answer How to enter your answer (opens in new window) Tables Keypad Keyboard Shortcuts
cant figure out where im going wrong .
Claim: The proportion of children who play sports is less than 55%. Sample statistics include n = 1,320 subjects with 33% saying that they play a sport. Find the value of the test statistic. Round your answer to two decimal places, if needed.
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Arsenic is toxic to humans and people can be exposed to it through contaminated drinking water, food, dust, and soil. Scientists have devised a non-invasive way to measure a person's level of arsenic poisoning: by examining toenail clippings. In a recent study, scientists measure the level of arsenic (in mg/kg) in toenail clippings of 8 people who lived near a former arsenic mine in Great Britain. The following levels are recorded. 0.8, 1.9, 2.7, 3.4, 3.9, 7.1, 11.9, 26.0 Below are the summary statistics of the data. min Q1 median Q3 max sd n mean 0.8 2.5 3.65 8.3 26 7.2125 8.368041 8 Suppose the 8 people examined were randomly sampled from residents near the former arsenic mine. Is it legitimate to construct a 95% confidence interval for the mean level of arsenic (in mg/kg) in toenail clippings for residents near the former arsenic mine using a t-distribution? Explain briefly.
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z = 3 is what percentile?

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