It is commonly held that around 15.7% of American college students regularly use marijuana. A certain schoolwants to determine if its percentage is higher than the national average. They take a random sample of 100students and want to use those data to test a hypothesis.What conditions, if any, are not met to be able to run a hypothesis test?O Sample Size ConditionO 10% ConditionO Randomization ConditionO None of these; all conditions for a hypothesis test are met

Conditions for run a hypothesis test. sample size condition 10% condition and randomization…

Answered: It is commonly held that around 15.7%…

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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What does it mean for the results of a hypothesis test to be statistically significant?
Q- You ............. .................drug?
Passed Failed White candidates Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence to support the claim that the results from the test are discriminatory? Use a 0.01 significance level. Minority candidates Determine the null and alternative hypotheses. O A. Ho: White and minority candidates have the same chance of passing the test. H: White and minority candidates do not have the same chance of passing the test. O B. Ho: A white candidate is more likely to pass the test than a minority candidate. H: A white candidate is not more likely to pass the test than a minority candidate. O C. Ho: A white candidate is not more likely to pass the test than a minority candidate. H: A white candidate is more likely to pass the test than a minority candidate O D. Ho: White and minority candidates do not have the same chance of passing the test. H: White and minority candidates have the same chance of passing the test. Determine the test statistic. =…
When asked what it means for the result of a hypothesis test to be practically significant (or practically important), Tatum says this means that the P-value is small and the null hypothesis has been rejected. what is wrong about this?
1
How much is in the can? A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. Following are the amounts measured in a simple random sample of eight cans. 11.96 12.10 12.04 12.13 11.98 12.05 11.91 12.03 Following is a dotplot for these data. Is it reasonable to assume that the conditions for performing a hypothesis test are satisfied? Explain (diagrem. jpg goes here) 2. If appropriate, perform a hypothesis test to determine whether the mean volume differs from 12 ounces. Use the ɑ = 0.05 level of significance. What do you conclude?
A high p-value, such as 0.8, provides evidence to say the null hypothesis is true. This statement is true. O This statement is false.
A food store advertises that their checkout waiting times is four minutes or less. An angry customer wants to dispute this claim. He takes a random sample of shoppers at the peak time and records their checkout times. Can he dispute their claim at significance level 10%? Checkout times: 3.8, 5.3, 3.5, 4.5, 7.2, 5.1 Match the following steps in hypothesis testing. -Step 1 - ✓ Step 2 -✓ Step 3 - ✓ Step 4 -✓ Step 5 Step 6 A. Ho: p = 4 Ha: p 4 Ha: μ = 4 K. We fail to reject the null hypothesis. L. We reject the null hypothesis. M.t-1.6598 N. Ho: p = 4 Ha: > 4 4 O. HO: Ha: p4 P. Ho: 4 Ha: p = 4
a statistics instructor belives that fewer than 25% of NRCC students have a cable TV subcription and instead prefer streaming content. What is the correct NULL hypothesis for this scenario? a. p< .25 b. p< or equal to .25 c. p >.25 d. p > or equal to .25
When asked what it means for the result of a hypothesis test to be practically significant (or practically important), Tatum says this means that the P-value is small and the null hypothesis has been rejected. Why is Tatum wrong?
High School Band - In most US high schools, students can play an instrument in three types of bands. A random sample of high school band students was taken and the results are summarized in the table below. Instrument type Band Woodwind Brass Percussion type Concert 31 25 8. Jazz 10 16 10 Marching 65 65 27 To assess whether there is a relationship between band type and instrument type, we want to conduct an appropriate hypothesis test. Choose the null and alternative hypothesis? 1. The categorical variables band type and instrument type are independent. Alternative hypothesis 2. The categorical variables band type and instrument type are not independent. Null hypothesis
In hypothesis testing, if the test statistic is negative, this means the sample statistic is larger than the claimed population parameter. O we call the initial claim being tested about the population an alternative hypothesis. the "P" in P-value stands for "personal." O it is necessary to know the population size in order to compute the test statistic. O results that are statistically significant may or may not be practically important (or practically significant).

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