The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas nearnuclear power plants are higher than for areas without nuclear facilities. A spokesperson for the CancerInstitute said, "From the data at hand, there was no convincing evidence of any increased risk of death from anyof the cancers surveyed due to living near nuclear facilities."לי B. If the National Cancer Institute researchers were incorrect in their conclusion that there is no increased cancerrisk associated with living near a nuclear power plant, are they making a Type I or a Type II error? Readcarefully and select one of the following:a) A Type II error, if the researchers were incorrect in their conclusion this would be rejecting the null hypothesiswhen the null hypothesis is true.b) A Type I error, if the researchers were incorrect in their conclusion this would be failing to reject the nullhypothesis when the null hypothesis is true.c) A Type II error, if the researchers were incorrect in their conclusion this would be failing to reject the nullhypothesis when the null hypothesis is false.d) A Type I error, if the researchers were incorrect in their conclusion this would be rejecting the null hypothesiswhen the null hypothesis is false.

Type I error: The type I error if the null hypothesis is rejected when it is actually true. Type II…

Answered: B. If the National Cancer Institute…

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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A health foods shop owner is wondering if his customers' daily vitamin supplement habits are in the same proportion as the general population of adults. The shop owner heard in a news report that 60% of all adults reported that they took a daily vitamin. The shop owner believes that his customers have a greater proportion of adults who take a daily vitamin, so he decides to conduct a hypothesis test using the following null and alternative hypotheses: Ho: p selected customers and recorded that 45 of them use daily vitamin supplements. = 0.6 and Ha: p > 0.6. The shop owner collected data from 50 randomly (a) Compute the appropriate test statistic and find the p-value of the test and based on a 5% significance level. Write a conclusion about the null hypothesis by interpreting the p-value. Be sure to clearly state the decision regarding the null hypothesis.
According to the Center for Disease Control (CDC) during the 2018-2019 season the percent of Americans 18 and older who had a flu shot was 45.3%. We did a random sample of 500 Americans and found that 200 out of the 500 had a flu shot. Is there enough evidence at the 5% level that 45.3% or less of Americans 18 or older had a flu shot? Set up the hypothesis test (Ho and Ha): a) Ho: u = 0.453 (The average of Americans who had flu shot is 45.3.) Ha: u < 0.453 (The average of Americans who had flu shot is less than 45.3. b) Ho: p = 0.453 (The proportion of Americans who had flu shot is 45.3%.) Ha: p < 0.453 (The proportion of Americans who had flu shot is less than 45.3%. c) Ho: p = 0.40 (The proportion of Americans who had flu shot is 40%.) Ha: p < 0.40 (The proportion of Americans who had flu shot is less than 40%. d) Ho: p = 0.40 (The proportion of Americans who had flu shot is 40%.) Ha: p not equal to 0.40 (The proportion of Americans who had flu shot is not equal to 40%.)
When conducting a hypothesis test, what would it mean if the researcher obtains a negative test statistic? The sample is too small. It’s very unlikely the results would have occurred just by chance alone. The sample statistic is smaller than the claimed population parameter. A mistake was made in terms of calculating the test statistic. The sample statistic is larger than the claimed population parameter.
According to a New York Times/CBS News poll conducted during June 24–28, 2011, 55% of the American adults polled said that owning a home is a very important part of the American Dream (The New York Times, June 30, 2011). Suppose this result was true for the population of all American adults in 2011. In a recent poll of 1780 American adults, 60% said that owning a home is a very important part of the American Dream. Perform a hypothesis test to determine whether it is reasonable to conclude that the percentage of all American adults who currently hold this opinion is higher than 55%. Use a 10% significance level, and use both the p-value and the critical-value approaches. Round your answers for the observed value of z and the critical value of z to two decimal places, and the p-value to four decimal places.zobserved =Enter you answer; z_observed p-value =Enter you answer; p-value Critical value =Enter you answer; Critical value
Members of the Town of Colonie Golfers’ Loop frequently raise concerns to Mr. Lange, as its leader, about how the league is run. The most frequent concern raised is that the teams competing each week are not statistically even. In other words, members raise concerns that one or more teams have a statistical advantage over other teams. To evaluate the validity of these claims, Mr. Lange has decided to use a mix of statistical hypothesis tests discussed in this course to evaluate the teams from Outing #14 in calendar-year 2016 (2016, #14). One is the Equal Vari- ances F Test, one is Welch’s T Test, and the other is the 2-Sample T Test for Equal Means. In this particular outing, seven teams were competing for the win. A random sample of eight prior scores from each team member was collected, and the summary statistics are shown below (correct to three decimal places). team sample size sample mean sample variance 1 24 76.500 14.522 2 32 79.656 18.233…
According to the Centers for Disease Control and Prevention, 10.1% of high school students currently use electronic cigarettes. A high school counselor is concerned the use of e-cigs at her school is higher. Complete parts (a) through (c) below. (a) Determine the null and alternative hypotheses. 0.101 Ho: H₁: р 0.101 (Type integers or decimals. Do not round.) (b) If the sample data indicate that the null hypothesis should not be rejected, state the conclusion of the high school counselor. = > A. There is sufficient evidence to conclude that the proportion of high school students exceeds 0.101 at this counselor's high school. B. There is not sufficient evidence to conclude that the proportion of high school students stayed 0.101 at this counselor's high school. C. There is not sufficient evidence to conclude that the proportion of high school students exceeds 0.101 at this counselor's high school. D. There is sufficient evidence to conclude that the proportion of high school students…
(D) decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim. (Reject, fail to reject) the null hypothesis. There (is, is not) enough evidence to (support,reject) the center’s claim.
According to the Centers of Disease Control, about 22% of American young people between the ages of 12 and 19 are obese.A student claims that the students in his local schools are in better shape than the national average, so their proportion of obese students is less than 22%. Which are the appropriate null and alternative hypotheses for this study? H0: p = 22%, HA: p < 22% H0: p ≠ 0, HA: p = 0 H0: p = 22%, HA: p > 22% H0: p = 22%, HA: p ≠ 22% Suppose that the result is to Fail to reject H0.Which is the proper conclusion? There is sufficient evidence to support the claim that the students at his local schools have a smaller proportion of obese students. There is not enough information to answer this question. There is not sufficient evidence to support the claim that the students at his local schools have a smaller proportion of obese students.
According to the Centers of Disease Control, about 22% of American young people between the ages of 12 and 19 are obese.A student claims that the students his local schools are in better shape than the national average, so their proportion of obese students is less than 22%. Which are the appropriate null and alternative hypotheses for this study? H0: p = 22%, H1: p ≠ 22% H0: p ≠ 0, H1: p = 0 H0: p = 22%, H1: p < 22% H0: p = 22%, H1: p > 22% Suppose that the result of the statistical is to reject H0.Which is the proper conclusion? There is not sufficient evidence to conclude that the students at his local schools have a smaller true proportion of obese students. There is sufficient evidence to conclude that the students his local schools have a smaller true proportion of obese students. There is not sufficient evidence to conclude that the students at his local schools have a smaller sample proportion of obese students. There is sufficient evidence to conclude that the…
A rejection of the null hypothesis implies the following: a) the null hypothesis is guaranteed false b) the null hypothesis may be false c) sample size was very large d) statistical power was insufficient for the experiment
Students in a Psychology Stats class gathered 1st and 2nd year university students to gather self-report data on UFO, sightings during the past year. A year later the same students took the survey after taking LSD. The results of the self-report survey are as follows: Participant ID UFO sightings UFO sightings before LSD after LSD 1 1 2 1 3 2 2 4 1 3 3 1 7 3 A) State the Null and Alternative Hypothesis. B) Find the calculated "t" value and the critical "t" value C) State weather to accept or reject the Null Hypothesis
8 cards were randomly drawn from a deck of 52 cards. All the cards that were red were considered a loss. Out of all the 8 cards drawn, all were red.

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