5A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. Assume that thedistributions follow the normal probability distribution and the population standard deviations are equal. The information is summarizedbelow.eBookPPrintrReferencesStatisticSample meanSample standard deviationSample sizeAt the .01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month?Required:a. State the null and alternate hypotheses.Test statisticⒸHo: MenWomen H₁: MenWomenO Ho: Men Women H: Men WomenO Ho: MenWomen H₁: Men # "Womenb. Compute the test statistic. (Round your answer to 3 decimal places.)Men23.705.7734p-valueWomen21.664.6838c. Compute the p-value. NOTE: P-value calculators are available through online search. (Round your answer to 4 decimal places.)Ⓒ Do not rejectO Rejectd. What is your decision regarding the null hypothesis?O YesⒸNoe. At the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month?

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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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Use technology to help you test the claim about the population mean, µ, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed. Claim: u> 1150; a = 0.08; ở = 198.94. Sample statistics: x = 1176.49, n= 300 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: us1150 O B. Ho: Hs1176.49 Ha:H>1150 Ha: H>1176.49 O C. Ho: H>1176.49 Ha: HS1176.49 O D. Ho: μ21176.49 H3: H1150 Ha:H<1150 Hg: H51150 Determine the P-value. P = (Round to three decimal places as needed.) Determine the outcome and conclusion of the test. V Ho. At the 8% significance level, there V enough evidence to V the claim. Click to select your answer(s). 3,257 1,732 DEC 8. Ps
T =???
The accompanying data table lists the magnitudes of 50 earthquakes measured on the Richter scale. Test the claim that the population of earthquakes has a mean magnitude greater than 1.00. Use a 0.01 significance level. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and conclusion for the test. Assume this is a simple random sample Magnitude of Earthquake 0.720 0.740 0.640 0.390 0.700 2.200 1.980 0.640 1.220 0.200 1.640 1.320 2.950 0.900 1.760 1.010 1.260 0.000 0.650 1.460 1.620 1.830 0.990 1.560 0.410 1.280 0.830 1.320 0.540 1.250 0.920 1.000 0.780 0.790 1.440 1.000 2.240 2.500 1.790
Use the Excel printout to answer the following questions. t-Test: Two-Sample Assuming Equal Variances E Variable 1 Variable 2 Mean 28.671 28.215 Variance 5.061 2.225 Observations 8 7 Pooled Variance 3.752 Hypothesized Mean Difference df 13 t Stat 0.455 P(T <= t) one-tail 0.328 t Critical one-tail 1.771 P(T <= t) two-tail 0.657 t Critical two-tail 2.160 In testing for a difference between the two population means, would you conclude that the assumption of a common variance is reasonable? O Yes, the ratio of the the larger variance to the smaller variance is less than three. O Yes, the ratio of the larger variance to the smaller variance is more than three. O No, the ratio of the larger variance to the smaller variance is less than three. O No, the ratio of the larger variance to the smaller variance is more than three. O It is not possible to check that assumption with the given information. What is the observed value of the test statistic? t = What are the degrees of freedom for the…
Determine the test statistic. Determine P-value Reject or Fail to reject?
Use technology to help you test the claim about the population mean, µ, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed. Claim: u> 1290; a= 0.03; o = 196.18. Sample statistics: x= 1310.04, n= 200 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: u2 1290 O B. Ho: u>1310.04 Ha: H 1310.04 Hap> 1290 Ο Ε. Ho με 1310.04 F. Ho: u> 1290 Ha: H< 1310.04 Ha us1290
Use technology and a t-test to test the claim about the population mean u at the given level of significance a using the given sample statistics. Assume the population is normally distributed. Claim: u>79; a =0.10 Sample statistics: x= 80.6, s= 2.9, n3 28 What are the null and alternative hypotheses? Choose the correct answer below. A. Ho: HS79 O B. Ho: H2 79 Ha H79 O D. Ho: H= 79 HA: H+79 O C. Ho: H#79 Ha: H = 79 What is the value of the standardized test statistic? The standardized test statistic is 2.92. (Round to two decimal places as needed.) What is the P-value of the test statistic? P-value = (Round to three decimal places as needed.)
What are the population parameters? Pick one: The difference in the sample sizes The difference in the two sample means The mean time spent for all test-takers before and after tutoring The mean time spent for all test-takers before and after tutoring combined Does sufficient or insufficient evidence exist?
Do Predicted Temperatures match Actual Temperatures? The table shows the predicted and actual temperatures for a seven day period. Assume that the two samples are randomly selected. At the 0.01 significance level, test the claim that there is no mean difference in the predicted and actual temperatures. (Be sure to subtract in the same direction). Predicted Temperatures °F Actual Temperatures °F Difference °F 87 87 83 85 78 75 81 86 85 90 80 81 76 79 What are the correct hypotheses? (Select the correct symbols and values.) Họ: Select an answer v? Select an answer H1: Select an answer ? v Select an answer Original Claim = Select an answer Select an answer H: Ho df =
CANVAS NIGHTIN... Proctor book orms - Teams Microsoft Office H... APA Citation Gene... Paraphrasing Tool... COMPLIO Examity :: Home Score: 22.4/43 8/10 answered Question 10 ▼ < Please find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 26 39 60 69 73 76 93 93 94 96 range = (Please enter an exact answer.) standard deviation (s) = (Please show your answer to one decimal place.) IQR = (Please enter an exact answer.) A new number, 288, is added to the data set above. Please find the new range, sample standard deviation and IQR of the new data set. range = (Please enter an exact answer.) standard deviation = (Please show your answer to one decimal place.) IQR = (Please enter an exact answer.) Which measure of spread is less affected by the addition of the extreme observation? O IQR O standard deviation O Range Hint: Help Video [+] Textbook MacBook Air F6 2 @ F2 W Submit Question 20 F3 #3 LL $ F4 R % 5 F5 T ^ 6 Y & 7 A4 F7 U * CO 8 DII FB ( 9…
A real estate agent believes that the mean home price in the northern part of a county is higher than the mean price in the southern part of the county and would like to test the claim. A simple random sample of housing prices is taken from each region. The results are shown below. Mean Variance Observations Southern Northern 155.056 168.889 345.938 560.928 18 Pooled Variance 453.433 Hypothesized Mean Difference df 34 1949 t Stat P(T<=t) one-tail p= Ex: 1.234 0.030 2.441 0.060 t Critical one-tail P(T<=t) two-tail t Critical two-tail 2.728 2. Confidence Level 99% t = Ex: 1.234 n= Ex: 9 Degrees of freedom: df = Point estimate for the southern part of the county: 1 Ex: 1.234 Point estimate for the northern part of the county: 2 0耳_ 国 23 72°F
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