If the p-value=0.03, check all that apply: the result is statistically significant at the 4% level. the result is statistically significant at the 1% level. then the null hypothesis is rejected at the 5% level. then the null hypothesis is rejected at the 2% level.
Q: ou are conducting a study to see if the probability of a true negative on a test for a certain…
A: GivenNull and alternative hypothesis isH0:p=0.31H1:p≠0.31sample size(n)=630No.of success(x)=160
Q: A newsletter publisher believes that less than 62% of their readers own a laptop. For marketing…
A: The objective of the question is to determine the conclusion regarding the publisher's claim that…
Q: A meteorologist is concerned about the number of tornadoes in her county. Using data from the past…
A: (a)Here, the claim is that true proportion of days with a tornado during peak season is greater than…
Q: Test the claim that the proportion of people who own cats is larger than 90% at the 0.01…
A:
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A: The random variable X follows normal distribution. We have to test whether the probability of a true…
Q: What is the test statistic for this sample? (Report answer accurate to three decimal places.) test…
A: Given that Sample size n = 380 Number of success, X = 215 Level of significance = 0.002
Q: You are asked to test the null hypothesis at the .05 level of significance and you end up with…
A: It is given that the z-observed value is -1.83.
Q: eviously, 7.9% of workers had a travel time to work of more than 60 minutes. An urban economist…
A: Given N=85 X=15
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: If you have a hypothesis test with alpha = 0.09, which of the following P-Values does NOT imply…
A:
Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…
A: Suppose p is the true population proportion of driver fatalities related to alcohol.
Q: significance level of α=0.02α=0.02. H0:p=0.59H0:p=0.59 H1:p<0.59H1:p<
A: The test is left tailed test. The sample proportion is:
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A: Given, The sample proportion is, The null and alternative hypothesis is:
Q: Test the claim that the proportion of people who own cats is smaller than 70% at the .01…
A:
Q: Ha:p0.25Ha:μ>0.25 H0:p=0.25H0:p=0.25 Ha:p>0.25Ha:p>0.25 The test is: left-tailed two-tailed…
A: Given that n=400 , X=80 , p=25%=0.25 Note: According to bartleby experts question answers…
Q: A meteorologist is concerned about the number of tornadoes in her county. Using data from the past…
A: I solve this problem using Excel.
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A:
Q: Test the claim that the proportion of people who own cats is significantly different than 90% at the…
A:
Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z=−1.04. Decide…
A: GivenThe test is left tailedTest statistic(z)=-1.04α=0.10
Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…
A: From the provided information, Sample size (n) = 69 From which 57 potential voters prefer candidate…
Q: a local high school use a computer-based program to brush up on algebra skills to be assess by a…
A: Claim: 80% of students using the program will pass the test.Sample size Number of students passed…
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A: Given that: n=415 x=361 Hypothesis, H0:p=0.85 H1:p≠0.85 The test is a two-tailed test.
Q: If you have a hypothesis test with alpha = 0.09, which of the following P-Values does NOT imply…
A: hypothesis test with = 0.09
Q: Test the claim that the proportion of people who own cats is significantly different than 20% at the…
A: Given : p = 0.2 α = 0.1
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: You are conducting a study to see if the probability of catching the flu this year is significantly…
A: From the provided information, level of significance (α) = 0.005 Sample size (n) = 121 Number of…
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A:
Q: You are conducting a study to see if the probability of catching the flu this year is significantly…
A: The claim is that the probability of catching the flu this year is significantly different from 0.86…
Q: Test the claim that the mean GPA of night students is smaller than 3.4 at the .005 significance…
A:
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A:
Q: Test the claim that the proportion of men who own cats is significantly different than 90% at the…
A:
Q: Test the claim that the mean GPA of night students is smaller than 2.1 at the .005 significance…
A: Consider that μ is the population mean GPA of night students.
Q: Test the claim that the mean GPA of night students is smaller than 2.2 at the .05 significance…
A: Since the population standard deviation is unknown, the appropriate test is one sample t-test. Null…
Q: You are conducting a study to see if the probability of catching the flu this year is significantly…
A: Suppose p as the probability of catching the flu this year.
Q: publisher reports that 36% of their readers own a laptop. A marketing executive wants to test the…
A: Given n=320 P=0.36 Alpha=0.01
Q: The test statistic of z=2.40 is obtained when testing the claim that p>0.7. Identify the…
A: Given:The test statistic of z=2.40Testing the claim that p>0.7.significance level of α=0.10
Q: Test the claim that the mean GPA of night students is larger than 3.1 at the 0.10 significance…
A: Given data : sample size, n = 75 sample mean, x̄ = 3.14 sample standard…
Q: A grocery store says their mangoes are fresher than most. A typical grocery store has roughly 10% go…
A: Given Information: n=135x=13α=0.05
Q: A sample of 1200 computer chips revealed that 48 % of the chips fail in the first 1000 hours of…
A: The claim is that the actual percentage that fall is less than the stated percentage.
Q: If you have a hypothesis test with alpha = 0.04, which of the following P-Values does NOT imply…
A: It is known that, if P-value is less than or equal to the level of significance, the test is…
Q: Test the claim that the mean GPA bf night students is significantly different than 3.2 at the 0.01…
A:
Q: You are conducting a study to see if the probability of catching the flu this year is significantly…
A: H0:p=0.89H1:p≠0.89α = 0.005n = 213x = 204
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Test the claim that the mean GPA of night students is larger than 2.6 at the 0.01 significance level. The null and alternative hypothesis would be: Ho:p > 0.65 Ho:p 2.6 H1:p 0.65 H1:p+ 0.65 H1:µ > 2.6 H1:µ + 2.6 H:µ < 2.6 %3D The test is: two-tailed right-tailed left-tailed Based on a sample of 65 people, the sample mean GPA was 2.63 with a standard deviation of 0.07 The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesisIf the test requires that the results be statistically significant at a level of α = 0.05, fill in the blanks and complete the sentences that explain the test decision and conclusion. The decision is to reject the null hypothesis. There is enough evidence at a significance level of a = 0.05 that the mean weight for U.S. women of age 40-49 who smoke daily is less than 169.976 pounds.Test the claim that the proportion of people who own cats is significantly different than 80% at the 0.01 significance level.The alternative hypothesis would be: μ<0.8μ<0.8 p>0.8p>0.8 μ>0.8μ>0.8 μ≠0.8μ≠0.8 p<0.8p<0.8 p≠0.8p≠0.8 The test is: right-tailed two-tailed left-tailed Based on a sample of 400 people, 71% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis The conclusion is: At the 0.01 alpha level, I was unable to show that the proportion of people who own cats is significantly greater than 80 percent. At the 0.01 alpha level, I was unable to show that the proportion of people who own cats is significantly different than 80 percent. At the 0.01 alpha level, I was able to show that the proportion of people who own cats is significantly greater than 80 percent. At the 0.01 alpha level, I was able to show that the proportion of people…
- Test the claim that the proportion of people who own cats is smaller than 30% at the 0.025 significance level. The null and alternative hypothesis would be: Ho: p=0.3 Ho: p = 0.3 Ho: p= 0.3 H₁: p 0.3 The p-value is: Ho: p = 0.3 Ho: p = 0.3 H₁: p0.3 H₁:p> 0.3 (to 2 decimals) (to 2 decimals)You are conducting a study to see if the probability of catching the flu this year is significantly less than 0.26. You use a significance level of α=0.10α=0.10. H0:p=0.26H0:p=0.26 H1:p<0.26H1:p<0.26You obtain a sample of size n=132n=132 in which there are 21 successes.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is..You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.85. You use a significance level of α=0.002α=0.002. H0:p=0.85H0:p=0.85 H1:p≠0.85H1:p≠0.85You obtain a sample of size n=415n=415 in which there are 361 successes.What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value =
- Algebra students in a local high school use a computer-based program to brush up on algebra skills to be assessed by a test. The program claims that 80% of students using the program will pass the test. After an early pilot of the new program, only 35 of 50 students passed the test. A 1-proportion z test is going to be conducted to see if there's evidence that the true passing rate is less than what was claimed. The null hypothesis is p = 0.80. (a) What is the alternative hypothesis? H₂: P = 0.80 H₂: p > 0.80 H₂ P= = 0.80 H₂: p< < 0.80 0000 (b) What is the value of z, the test statistic? (Round your answer to two decimal places.) Z = (c) What is the P-value? (Use a table or technology. Round your answer to four decimal places.)True or false: If P = 0.02, then a) The result is statistically significant at the 5% level. b) The result is statistically significant at the 1% level. c) The null hypothesis is rejected at the 5% level. d) The null hypothesis is rejected at the 1% level.You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.34. You use a significance level of α=0.005α=0.005. H0:p=0.34H0:p=0.34 H1:p≠0.34H1:p≠0.34You obtain a sample of size n=551n=551 in which there are 164 successes.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value =
- Test the claim that the mean GPA of night students is larger than 2.5 at the 0.005 significance level.The null and alternative hypothesis would be: H0:p=0.625H0:p=0.625H1:p≠0.625H1:p≠0.625 H0:μ=2.5H0:μ=2.5H1:μ≠2.5H1:μ≠2.5 H0:p≤0.625H0:p≤0.625H1:p>0.625H1:p>0.625 H0:μ≤2.5H0:μ≤2.5H1:μ>2.5H1:μ>2.5 H0:p≥0.625H0:p≥0.625H1:p<0.625H1:p<0.625 H0:μ≥2.5H0:μ≥2.5H1:μ<2.5H1:μ<2.5 The test is: right-tailed two-tailed left-tailed Based on a sample of 75 people, the sample mean GPA was 2.51 with a standard deviation of 0.05The test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesisIt has been reported in the past that the probability that an individual will develop schizophrenia over their lifetime is 0.004. A researcher believes that this proportion has increases since then. She found out that in a random sample of 2500 individuals, 16 developed schizophrenia. Is there evidence to support the claim that the true proportion of people who will develop schizophrenia is greater 0.004? Use hypothesis testing at a = 0.10 level of significance to answer this question. a. State the null and alternative hypotheses. b. What is the probability model (underlying distribution of the sample proportion p)? c. Compute p. d. Compute the test statistic. e. Find the P-value. f. Make the decision whether to reject Ho or not. g. State a conclusion answering the question above. 1Test the claim that the mean GPA of night students is smaller than 2.2 at the .05 significance level.The null and alternative hypothesis would be: H0:p=0.55H0:p=0.55H1:p≠0.55H1:p≠0.55 H0:p=0.55H0:p=0.55H1:p<0.55H1:p<0.55 H0:μ=2.2H0:μ=2.2H1:μ≠2.2H1:μ≠2.2 H0:p=0.55H0:p=0.55H1:p>0.55H1:p>0.55 H0:μ=2.2H0:μ=2.2H1:μ<2.2H1:μ<2.2 H0:μ=2.2H0:μ=2.2H1:μ>2.2H1:μ>2.2 The test is: right-tailed two-tailed left-tailed Based on a sample of 35 people, the sample mean GPA was 2.15 with a standard deviation of 0.06The test statistic is (to 3 decimals)The critical value is (to 3 decimals)Based on this we fail to reject the null hypothesis reject the null hypothesis