In a hypothesis test with a = 0.05 the p-value is calculated to be 0.02. What decision should be made about the null hypothesis? Reject the Null Hypothesis Fail to reject the Null Hypothesis

Q: State the appropriate null and alternative hypothesis and find the critical value for a left-tailed…

A: Given Information: Significance level α = 0.10  Sample size (n) = 23 Population standard deviation σ…

Q: The average amount of money lost by a casino patron is below $500. Determine if the hypothesis…

A: Here we need to find whether the given claim is null or alternative.

Q: The Nero Match Company sells matchboxes that are supposed to have an average of 40 matches per box,…

A: The random variable number of matches per box follows normal distribution. The population mean is…

Q: Which hypothesis test has the greatest power? t-test with a 75% chance of rejecting H0 Chi-square…

A: Solution Power is increases with increases in probability in type 1 error.

Q: A janitor at a large office building believes that his supply of light bulbs has too many defective…

A: It is give that the p-value is 0.087.

Q: A store manager hypothesizes that the average number of pages a person copies on the store’s copy…

A: The provided information is   n=50 α=0.01 1. The null hypothesis is Ho:µ=40 E. = 2. The alternative…

Q: A statistical test of hypothesis produces the P-value P = 0.221.  Will the null hypothesis be…

A: Given,P-value=0.221level of significance (α)=0.10

Q: The local swim team is considering offering a new semi-private class aimed at entry-level swimmers,…

A: Solution: From the given information, the claim is that the population mean is less than 15.

Q: Find the P-value for a left-tailed hypothesis test with a test statistic if z=-1.26. Decide whether…

A: Given information- We have given a left-tailed hypothesis test. The value of the test statistics, z…

Q: A hypothesis test is conducted with a level of significance of 1% and the resulting p value is…

A:

Q: To be considered 18-karat (18K) gold, a piece of jewelry must be made of 75% pure gold. The higher…

A: It is needed to define the type I error.

Q: If the p-value is greater than alpha, we will. reject the null hypothesis and accept the alternative…

A: If the P-value is greater than alpha, we do not have sufficient evidence to reject the null…

Q: Test the null hypothesis B= 60 against the alternative hypothesis B > 60 at the 0.01 level of…

A: Assuming that part b and c are already completed and regression model has been fitted using…

Q: The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with σ ≈…

A: Given data Hypothesized mean = 11.1 Thousand miles Sample mean = 10.9 Thousand miles Sample size =…

Q: A refrigerator manufacturer claims that the mean life of its competitor's refrigerators is less than…

A:

Q: g. With which p level-0.05 or 0.01 reject the null hypothesis? Explain.

A: While conducting a Z-test, the 6 steps of hypothesis testing are: i) Identifying the population and…

Q: An assembly line machine is supposed to turn out ball bearings with a diameter of 1.25 centimeters.…

A:

Q: A very small p-value is strong evidence for the Ha (Alternative Hypothesis). Select one: True False

A:

Q: The P-value for a hypothesis test is given. Determine whether the strength of the evidence against…

A: Given Information:  p = 0.04

Q: In a hypothesis test with hypotheses H0 : P greater than equal 0.76 and H1 : P less than 0.76 , a…

A: Denote p as the true population proportion. The null and alternative hypotheses are: Null…

Q: An economist claims that the proportion of people who plan to purchase a fully electric vehicle as…

A: The provided information are: Sample size (n) = 750Hypothesised proportion (po)=0.65From the…

Q: A book club wonders if fewer than 40 percent of students at a local university had read at least one…

A: Test hypothesis: Denote the population proportion of students at a local university who had read at…

Q: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.42. Decide…

A: P( z < -1.42 ) = NORMSDIST( -1.42) ------ Excel function                      = 0.0778…

Q: The currently used medicine is successful for 26% of patients. A new experimental medication is…

A: sample size(n)=500no.of patients successful for new experimental medication (X)=140sample proportion…

Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z= - 1.79. Decide…

A: The test statistic is given by Z = -1.79 Level of significance = 0.10

Q: The test statistic of z =0.89 is obtained when testing the claim that p>0.1. a. Identify the…

A: GivenTest statistic(z)=0.89claim is p>0.1significance level(α)=0.01

Q: The p-value for a hypothesis test turns out to be 0.04836. At a 5% level of significance, what is…

A: It is given that the p-value is 0.04836.

Q: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.96. Decide…

A: Given information Left tailed hypothesis test Z = -1.96 Significance level α = 0.05

Q: The test statistic of z=1.93 is obtained when testing the claim that p>0.2. a. Identify the…

A: From the provided information, a) The hypotheses can be constructed as: H0: p = 0.2 H1: p > 0.2…

Q: -Find the correct null hypothesis and for each correct alternative hypothesis 7. Suppose you hear a…

A: Solution

Q: A presidential candidate claims that the proportion of college students who are registered to vote…

A: Claim : The proportion of college students who are registered to vote in the upcoming election is at…

Q: In a hypothesis test with hypotheses H.:H2 74 and H,: < 74 a random sample of 20 elements selected…

A: Given n=20, Xbar=67.8, s=11.9, mu=74 Sigma( unknown) so we use t statistic for testing the…

Q: In a random sample of 400 residents, 220 support a 0.3% sales tax increase to build a new high…

A: Hey, since there are multiple subparts posted, we will answer first three question. If you want any…

Q: If the results of the test with the following hypotheses are statistically significant, we have…

A: It is given that, In a testing problem, the following hypothesis is to consider  H0: μ1 =μ2  Ha: μ1…

Q: Match each of the hypothesis test conclusions below to the corresponding p-value.…

A: To decide on the hypothesis testing we compare the p-value with the level of significance.…

Q: If the level of significance in a hypothesis test is 1 %, what would the p-value have to be for…

A: We fail to reject the null hypothesis when the p value is greater than the significance level. We…

Q: A sample is selected from a population with a mean of m = 30 and a treatment is administered to the…

A: Given information: μ=30 According to the researcher, the treatment is expected to increase scores.

Q: A newsletter publisher believes that over 20 % of their readers own a Rolls Royce. For marketing…

A: In this case, a test is required to see whether over (more) than 20% of the reader owns a Rolls…

Q: The test statistic of z=0.56 is obtained when testing the claim that p>0.8. a. Identify the…

A: Given,   Test Statistic: z =0.56   Claim: p&gt;0.8

Q: Based on certain data, a null hypothesis is rejected atthe 0.05 level of significance. Would it also…

A: Concept of p-value: The p-value in hypothesis testing is the probability of obtaining a test…

Q: In a hypothesis test with hypotheses Ho :p 2 0.76 and H1 :p < 0.76, a random sample of size 974…

A:

Q: The mean SAT Score in mathematics is 506. The founders of a nationwide SAT preparation course claim…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: In a hypothesis test with hypotheses Ho :p 2 0.76 and H1 :p < 0.76, a random sample of size 979…

A: Given data sample size, n =979

Q: a) Write the null hypothesis and the alternative hypothesis. b) Based on the sample mean, the salmon…

A: The provided sample mean is Xˉ=0.07\bar X = 0.07 and the sample standard deviation is s=0.02s =…

Q: The p-value for a hypothesis test turns out to be 0.09484. At a 2% level of significance, what is…

A:

Q: What is the observed test statistic for this   test?

A:

Q: In a hypothesis test with hypotheses Ho : p > 0.76 and Hı:p < 0.76, a random sample of size 974…

A: Here we have to test: H0: p≥0.70H1: p&lt;0.76n=974p^=0.7380α=0.05

Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z = - 1.68. Decide…

A: It is given that, the test is a left-tailed hypothesis (One-tailed test) with Z=-1.68 So, P-value is…

Q: When asked what it means for the result of a hypothesis test to be practically significant (or…

A:

Q: A software company advertises that its software can improve students' grades by at least 15%.  One…

A: Types of errors: Rejecting a true null hypothesis is called a Type I error. Failing to reject a…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.