![5. [18 points] Consider the Minitab output shown below. Test of μ = 100 vs > 100 The assumed standard deviation 2.4 95% Lower Bound 100.770 Mean SE Mean 101.560 3.25 25 a. Fill in the missing values in the output. Can the null hypothesis be rejected at the 0.0s level? Why? b. Is this a one-sided or a two-sided test? C. If the hypotheses had been Ho: μ = 99 versus H : μ > 99, would you reject the null hypothesis at the 0.05 level? Can you answer this question without doing any additional calculation? Why? d. Use the output and the normal table to find a 95% two-sided confidence interval on the mean. 100? e. What is the P-value if the alternative hypothesis is H!: μ](http://img.homeworklib.com/questions/ac5dcbc0-d39c-11ea-aef7-2f12629f3125.png?x-oss-process=image/resize,w_560)
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5. [18 points] Consider the Minitab output shown below. Test of μ = 100 vs >...
Q5. The following output from MINITAB presents the results of a hypothesis test. Test of mu...
Q5. The following output from MINITAB presents the results of a hypothesis test. Test of mu = 4.7 vs not = 4.7 The assumed standard deviation = 2.0 N Mean SE Mean 35 5.401 0.3381 95% CI (4.738, 6.064) Z 2.074 0.038 a. What are the null and altemate hypothesis? b. What is the value of the test statistic? c. What is the P-value? d. Do you reject He at the a=0.05 level? Why? e. Do you reject H at...
! Required information The following MINITAB output presents the results of a hypothesis test for a...
! Required information The following MINITAB output presents the results of a hypothesis test for a population mean u. One-Sample Z: X Test of mu = 45 Vs > 45 The assumed standard deviation = 5.0921 95% Lower Bound 45.5015 Variable X N 122 Mean 46.2598 St Dev 5.0921 SE Mean 0.4610 Z 2.73 P 0.003 0.003 NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Use the output...
1. Ho: μ 100 versus H1: μ # 100, a simple random sample of size n...
1. Ho: μ 100 versus H1: μ # 100, a simple random sample of size n 23 To test is obtained from a population that is known to be normally distributed: (a) If 104.8 and s-9.2, compute the test statistic. (b) If the researcher decides to test this hypothesis at the a 0.01 level of significance, determine the critical values. (c) Draw ar-distribution that depicts the critical region. (d) Will the researcher reject the null hypothesis? Why? Then state the...
Below is a selection of MiniTab output for hypothesis tests about data on homes sold in...
Below is a selection of MiniTab output for hypothesis tests about data on homes sold in Stockton, CA in the late 90s. Use this information to evaluate the hypothesis tests A) Two-tailed, c-100000, α 0.05 Descriptive Statistics N Mean StDev SEMean 95% CI for 1500 123694 63251 1633 (120490, 126897) μ mean of spruce B) Evaluate at α 0.01 Test Null hypothesis Alternative hypothesis T-Value P-Value Ho: μ-0.05 H1: μ > 0.05 240 0.008 C) Two-tailed, C-3, α-0.01 Descriptive Statistics...
Bonus (5 points) Suppose that you are testing the following hypotheses: Ho: 4 = 10 and...
Bonus (5 points) Suppose that you are testing the following hypotheses: Ho: 4 = 10 and H :> 10. If the null hypothesis is rejected at the 1% level of significance, what statement can you make about the confidence interval on the mean? a) The lower bound of a 95% one-sided confidence interval on the mean exceeds 10. b) 9 <u< 13 c) No statement can be made. d) The lower bound of a 95% one-sided confidence interval on the...
#1 part A.) To test H0: μ=100 versus H1: μ≠100, a random sample of size n=20...
#1 part A.) To test H0: μ=100 versus H1: μ≠100, a random sample of size n=20 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d) below. (aa.) If x̅=104.4 and s=9.4, compute the test statistic. t0 = __________ (bb.) If the researcher decides to test this hypothesis at the α=0.01 level of significance, determine the critical value(s). Although technology or a t-distribution table can be used to find the critical value, in...
Output from a software package follows: One-sample Z: Test of mu=35 vs not =35 The assumed...
Output from a software package follows: One-sample Z: Test of mu=35 vs not =35 The assumed standard deviation = 3.4 Variable=x N=25 Mean =36.2 StDev.= 1.62 SE Mean = ? Z= ? Pvalue= ? (a) Fill in the SE Mean, Z, and Pvalue. Conduct the test using the pvalue. (b) Conduct the test using the critical value approach. Draw the rejection region and mark your test statistic Z* on the graph. Is your conclusion consistent with the one from (a)?...
Suppose that a researcher, using data on class size (CS) and average test scores from 100...
Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression: 1. Test-Score = 520.4-5.82 × CS (20.4) (2.21) A classroom has 22 students. What is the regression's prediction for that classroom's average test score? Last year a classroom had 19 students, and this year it has 23 students. What is the regression's prediction for the change in average test score? The sample average class size across the 100...
1. Suppose that you are testing the following hypotheses: ?0: ? = 10 and ?1: ?...
1. Suppose that you are testing the following hypotheses: ?0: ? = 10 and ?1: ? > 10. If the null hypothesis is rejected at the 1% level of significance, what statement can you make about the confidence interval on the mean? a.) The lower bound of a 95% one-sided confidence interval on the mean exceeds 10 b.) 9 ≤ ? ≤ 13 c.) No statement can be made d.) The lower bound of a 95% one-sided confidence interval on...
Below is the output from an ANOVA test Note that the degrees of freedom between groups...
Below is the output from an ANOVA test Note that the degrees of
freedom between groups is 2,
The degrees of freedom within is given to be 39, the F statistic
is given to be 3.33. and the p-value of
0.0461. (a) How many groups are there in this test? (b) What was
the sample size? (c) What is the conclusion of the test at the 5%
significance level?
An independent random sample is selected from an approxi- mately
normal...
Q5. The following output from MINITAB presents the results of a hypothesis test. Test of mu = 4.7 vs not = 4.7 The assumed standard deviation = 2.0 N Mean SE Mean 35 5.401 0.3381 95% CI (4.738, 6.064) Z 2.074 0.038 a. What are the null and altemate hypothesis? b. What is the value of the test statistic? c. What is the P-value? d. Do you reject He at the a=0.05 level? Why? e. Do you reject H at...
! Required information The following MINITAB output presents the results of a hypothesis test for a population mean u. One-Sample Z: X Test of mu = 45 Vs > 45 The assumed standard deviation = 5.0921 95% Lower Bound 45.5015 Variable X N 122 Mean 46.2598 St Dev 5.0921 SE Mean 0.4610 Z 2.73 P 0.003 0.003 NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Use the output...
1. Ho: μ 100 versus H1: μ # 100, a simple random sample of size n 23 To test is obtained from a population that is known to be normally distributed: (a) If 104.8 and s-9.2, compute the test statistic. (b) If the researcher decides to test this hypothesis at the a 0.01 level of significance, determine the critical values. (c) Draw ar-distribution that depicts the critical region. (d) Will the researcher reject the null hypothesis? Why? Then state the...
Below is a selection of MiniTab output for hypothesis tests about data on homes sold in Stockton, CA in the late 90s. Use this information to evaluate the hypothesis tests A) Two-tailed, c-100000, α 0.05 Descriptive Statistics N Mean StDev SEMean 95% CI for 1500 123694 63251 1633 (120490, 126897) μ mean of spruce B) Evaluate at α 0.01 Test Null hypothesis Alternative hypothesis T-Value P-Value Ho: μ-0.05 H1: μ > 0.05 240 0.008 C) Two-tailed, C-3, α-0.01 Descriptive Statistics...
Bonus (5 points) Suppose that you are testing the following hypotheses: Ho: 4 = 10 and H :> 10. If the null hypothesis is rejected at the 1% level of significance, what statement can you make about the confidence interval on the mean? a) The lower bound of a 95% one-sided confidence interval on the mean exceeds 10. b) 9 <u< 13 c) No statement can be made. d) The lower bound of a 95% one-sided confidence interval on the...
Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression: 1. Test-Score = 520.4-5.82 × CS (20.4) (2.21) A classroom has 22 students. What is the regression's prediction for that classroom's average test score? Last year a classroom had 19 students, and this year it has 23 students. What is the regression's prediction for the change in average test score? The sample average class size across the 100...
Below is the output from an ANOVA test Note that the degrees of
freedom between groups is 2,
The degrees of freedom within is given to be 39, the F statistic
is given to be 3.33. and the p-value of
0.0461. (a) How many groups are there in this test? (b) What was
the sample size? (c) What is the conclusion of the test at the 5%
significance level?
An independent random sample is selected from an approxi- mately
normal...
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