A test of H₂: H=50 versus H₁M #50 is performed using a significance level of α = 0.01. The value of the test statistic is z = 1.23 A) is H₂ rejected? B) if the true value of mis 65, is the results a Type I error, a Type II error, or a correction ?
Q: You are conducting a hypothesis test about income where the research (alternative) hypothesis is…
A: It is given that Population mean, μ = 60000 Sample mean, x̄ = 65000 Standard error, SE = 130
Q: Assume a significance level of a=0.05 and use the given information to complete parts (a) and (b)…
A: The p-value is 0.0047.
Q: Consider the following computer output: Test of mu = 91 vs > 91 Variable N Mean StDev SE Mean x 20…
A: It is given that the sample size is 20.
Q: Suppose 1Q scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…
A: T test is used to determine whether there exist mean significance between sample and population,…
Q: n HR manager in a company wants to know if there’s a difference in the amount of time workers in…
A: The hypothesis can be constructed as:
Q: A statistical test of hypothesis produces the P-value P = 0.0203. Will the null hypothesis be…
A: We need to use the concept of hypothesis testing
Q: Data for (3) A random sample of 100 statisticians were asked, "To what extent do you feel the…
A: Solution To draw the distribution pie chart is appropriate because the sample size is large and the…
Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…
A: It is given that 356 of the 534 randomly selected wildfires looked at in the south were caused by…
Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…
A: Given information: Subject 0 Week 2 Week 4 Week M participant 1 28 45 69 47.33333333 2 32 43…
Q: he manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and…
A: Given : Sr. No. Before(x) After (y) 1 12 10 2 14 13 3 13 13 4 11 10 5 9 8 6 15 12 7…
Q: In a random sample of 28 high school students, the linear correlation coefficient R between the…
A: The question is about correlation Given : Linear correlation coefficient ( r ) = -0.473 Randomly…
Q: Ho: P1=p2 versus Ha: P1 P2 with a test statistic of 2 = -2.015. Group B researchers used the same…
A: Answer Given level of significance =0.05
Q: If you receive a p-value of 0.233 when performing a statistical test. Using the normal alpha level,…
A: From the provided information, The p value is 0.233.
Q: The p-value for the one-sided test Ho: µ = 3 ppm vs. H:u> 3 ppm was 0.23. Do you reject the null…
A: GivenP-value for the one-sided test is 0.23H0:μ=3 ppmH1:μ>3ppmsignificance level(α)=5%=0.05
Q: You wish to test the following claim (H) at a significance level of a = 0.10. Ho:p12 P2 Ha: P1 P2…
A: The question is about hypothesis testing.Given :No. of successes in first sample ( x1 ) = 102No. of…
Q: You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001.…
A: Given Information: The objective is to test the claim (Ha) at a significance level of α=0.001…
Q: Suppose ₁ and ₂ are true mean stopping distances at 50 mph for cars of a certain type equipped with…
A: Significance level Null Hypothesis Alternative Hypothesis First sample:Second sample:
Q: Use a significance level of a=0.05 to test the claim that u= 20,0. The sample data consists of 10…
A: Given: n= 10.0 ,x̄= 20.5 ,s= 4.5 µ= 20.0 ,significance level(∝)= 0.05 ,degree of freedom= 9.0
Q: Suppose u1 and 2 are true mean stopping distances at 50 mph for cars of a certain type equipped with…
A: From the provided information,
Q: According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults…
A: The random variable eats salad at least once a week follows binomial distribution. X ~ B (n, p) The…
Q: A sample of n=9 athletes is taken from the SW population that has a M =29. Stress scores are…
A: State the hypotheses. That is, there is no sufficient evidence to conclude that the treatment…
Q: n a recent study it was found that of 450 physicians polled 162 were women and of 530 nurses polled…
A: Given: x1=445 n1=530x2=162 n2=450α=0.01
Q: You wish to test the following claim (HaHa) at a significance level of α=0.01. Ho:p=0.44…
A:
Q: You wish to test the following claim (H) at a significance level of a = 0.10. Ho: P1 = P2 Ha: P₁ P2…
A: given data n1 = 370x1 = 708n2 = 579x2 = 324α = 0.10claim : p1 < p2p^1 = x1n1 = 370708…
Q: You wish to test the following daim (Ha) at a significance level of a = 0.01. H.:P1 2 P2 Ha:P1 < P2…
A:
Q: When we test Ho: μ = 0 against H₂: μ>0, we get a P-value of 0.08. a. What would the decision be for…
A: Answer:-Given Hypotheses Ho: µ =0 against Ha :µ>0, and P-value = 0.08. We know that, when…
Q: You wish to test the following claim (HaHa) at a significance level of α=0.001 Ho:p=0.71…
A: The hypothesized proportion is 0.71.
Q: You wish to test the following claim (Ha) at a significance level of a = 0.05. Ho: P₁ ≤ P2 Ha:P₁ >…
A: Given Alpha=0.05 n2=123 n2=104 X1=269 X2=335
Q: You wish to test the following claim (H.) at a significance level of a = 0.001. H.:p1 = P2 Ha:P1 >…
A: Given,n1=280 , x1=110n2=529 ,…
Q: A statistical test of hypothesis produces the P-value P = 0.112. Will the null hypothesis be…
A: Decision rule : Reject H0 if P-value < α
Q: 4. Let’s assume it is “normal” and follows the empirical rule (68 - 95 – 99.7). • There are 50…
A: According to the answering guidelines, we can answer only three subparts of a question and the rest…
Q: (a) What is the level of significance? State the null and alternate hypotheses. O Ho: Hy = Hzi…
A: For fishing, sample size n1 = 41, sample mean = 4.9 and population SD = 1.6 For camping, sample size…
Q: You wish to test the following claim (Ha) at a significance level of α=0.05. Ho:p1≤p2Ho:p1≤p2…
A: State the hypotheses.
Q: You wish to test the following claim (Ha) at a significance level of a = 0.02. H.:P1 = P2 Ha:P1 < P2…
A: Given n1=476, X1=344, n2=398, X2=331 Level of significance=0.02 p1cap=X1/n1 and p2cap=X2/n2
Q: You wish to test the following daim (Ha) at a significance level of a = 0.02. H,:P1 = P2 Ha:P1 + P2…
A: Given, x1 = 244, n1 = 266 x2 = 455, n2 = 474 α = 0.05
Q: In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the…
A: Solution: Let X be the hippocampal volume. From the given information, x-bar = 8.09, s = 0.7 and n =…
Q: You wish to test the following claim (Ha) at a significance level of a = 0.002. Ho: P₁ = P2 Ha: P₁…
A: Population - 1 n1 = 228 +368 = 596 , x1 = 228 , Sample proportion = p^ = 228/596 = 0.38255…
Q: The Wilcoxon signed-rank test can be used to perform a hypothesis test for a population median, η,…
A:
Q: A random sample of 15 families representing three different Scandinavian countries has been observed…
A: Given: Sweden Norway Denmark 10 11 7 9 10 5 4 5 2 2 2 0
Q: s Blood Pressure the Same for Both Arms? Listed below are systolic blood pressure measurements…
A: Construct the table for ease of calculations: right arm left arm 2 175 101…
Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…
A: We have given that the reading speed of second grade student in a large city is approximately…
Q: Test the claim that the proportion of men who own cats is significantly different than the…
A: Test statistic: Given information, n1=40p^1=0.40n2=60p^2=0.45 Consider, p^=n1*p^1+n2*p^2n1+n2…
Q: You wish to test the following claim (HaHa) at a significance level of α=0.02α=0.02.…
A:
Q: which of these comparison between an ANOVA and t test is correct? A. a t test provides more…
A: Solution ANOVA and t test both are used for testing.
Q: Assume a significance level of α= 0.05 and use the given information to complete parts (a) and (b)…
A:
Q: You wish to test the following claim (Ha) at a significance level of a = 0.001. H,:P = Pr Ha:pi > p2…
A: There are two independent samples which are two populations. We have to test whether the first…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 54 men and 70 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women N Mean StDev SE Mean Men Women 98% CI for mu Men - mu Women (- 12.20, - 1.00) T-Test mu Men = mu Women (vs H2 O C. Ho: H1 = H2; Ha: H1 #H2 (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value =A study was conducted on whether yoga is practiced regularly among university students. According to this study, it was revealed that 116 out of 200 male students and 92 out of 200 female students regularly practice yoga. Can you suggest that the proportion of male students who regularly practice yoga is higher than the proportion of female students? (alpha=0.05) a) test by means of test statistic. b) Test by calculating the p-value.Researchers wanted to know if therapy could help smokers quit smoking. Of the 71 smokers they tested, 39 were smoking one year after treatment. Use a 0.05 significance level to test the claim that the majority are smoking one year after treatment. What is/are the critical value(s)? ттT Arial 3 (12pt) v TE -E · -
- You wish to test the following claim (Ha) at a significance level of a = 0.002. = Ho: P₁ Ha: P1 P2 P2 You obtain a sample from the first population with 594 successes and 78 failures. You obtain a sample from the second population with 558 successes and 44 failures. The test statistic is... O in the critical region not in the critical region critical value = test statistic = This test statistic leads to a decision to... reject the null hypothesis fail to reject the null hypothesis [three decimal accuracy] [three decimal accuracy] As such, the final conclusion is that... O There is sufficient evidence to support that the first population proportion is less than the second population proportion. There is not sufficient evidence to support that the first population proportion is less than the second population proportion.You wish to test the following claim (HaHa) at a significance level of α=0.005. Ho:p=0.35 Ha:p≠0.35You obtain a sample of size n=650 in which there are 209 successful observations.Determine the test statistic formula for this test.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... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population proportion is not equal to 0.35. There is not sufficient evidence to warrant rejection of the claim that the population proportion is not equal to 0.35. The sample data support the claim that the population proportion is not equal to 0.35. There is not…You wish to test the following daim (Ha) at a significance level of a = 0.10. H,:P1 P2 You obtain 615 successes in a sample of size n1 = 704 from the first population. You obtain 490 successes in a sample of size n2 = 581 from the second population. critical value = [three decimal accuracy] test statistic = [three decimal accuracy] The test statistic is... O in the critical region O not in the critical region This test statistic leads to a decision to... O reject the null accept the null fail to reject the null As such, the final condusion is that... O There is sufficient evidence to support that the first population proportion is greater than the second population proportion. O There is not sufficient evidence to support that the first population proportion is greater than the second population proportion.
- Use a significance level of 0.01You wish to test the following daim (Ha) at a significance level of a = 0.05. Ho:P1 P2 You obtain a sample from the first population with 422 successes and 126 failures. You obtain a sample from the second population with 385 successes and 176 failures. critical value = [three decimal accuracy] test statistic = [three decimal accuracy]A test of Ho: H=0 versus H₁: >0 is performed using a significance level of a=0.05. The P-value is 0.07. Part: 0/3 Part 1 of 3 (a) Is Ho rejected? Since P Part: 1/3 Part 2 of 3 Part: 2/3 ▾a, we do not reject Ho at the a= 0.05 level. (b) If the true value of μ is 0, is the result a Type I error, a Type II error, or a correct decision? The result is a correct decision Part 3 of 3 X X S (c) If the true value of His 4, is the result a Type I error, a Type II error, or a correct decision? S Español
- You wish to test the following claim (Ha) at a significance level of a = Ho: P₁ = P2 Ha: P₁ P2 You obtain a sample from the first population with 120 successes and 403 failures. You obtain a sample from the second population with 39 successes and 278 failures. The test statistic is... in the critical region O not in the critical region critical value = ± test statistic = This test statistic leads to a decision to... reject the null hypothesis fail to reject the null hypothesis = 0.005. O There is not sufficient evidence to support second population proportion. [three decimal accuracy] [three decimal accuracy] As such, the final conclusion is that... There is sufficient evidence to support that the first population proportion is not equal to the second population proportion. first population proportion not equal to theYou wish to test the following claim (HaHa) at a significance level of α=0.05 Ho:p=0.17 Ha:p<0.17You obtain a sample of size n=287 in which there are 30 successful observations.Determine the test statistic formula for this test.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 =Use a significance level of a=0.05 to test the claim that μ=19. The sample data consists of 15 scores for which x=20.4 and s=4.8. State the null and alternative hypotheses, compute the value of the test statistic, and find the P-value for the sample. State your conclusions about the claim.