a-- IA 1) - 16 - (3+ 1- 12 Excel output for the hospital labor needs case (sample size: A 16) value 0,00a3 Lower 1 Coeffieienta andard Heror 194.20 Upper 3045.3201 Intereept 504.119 3.13 4.240 XHay () Bedbaya (N Langthstay (K3) D.0130 2.79 0.0120 .0102 .1922 1.04 15.357 2.9IE-0 4.14 1.1 -413. 757 0.0012 -62.sas0 -19.930 (1) Find , and the t statistic for testing y- o on the output and report their values. (Round your t value answers to 3 decimal places and other answers to 4 decimal places. Negative values should be indicated by a minus sign.) bj HO 20 HO 30

Which of the following conclusions is correct for these test results? > bartlett.test(len~river, data=rivers) Bartlett test of homogeneity of variances data: len by river Bartlett's K-squared = 0.61394, df = 4, p-value = 0.5226 %3D Hint* the first line of code should tell you the type of test you are dealing with. There is NO significant difference in variances among the rivers. There is a significant difference in variances among the rivers. There is NO significant difference in means among the rivers.

A different I/O psychologist wants to know if there is a difference in worker evaluations depending if the employee is a male or female.  A group of managers were recruited and each rated both 15 men and 15 women employee evaluations on a scale of 0-10.  The ratings on the worker evaluations were recorded for each manager.  Which statistical test would be best to determine if there is a significant difference between groups?     one-sample t-test     dependent samples t-test           ANOVA

Answer all of the following question, anova table have given

In a completely randomized design, 12 experimental units were used for the first treatment, 15 for the second treatment, and 20 for the third treatment. Complete the following analysis of variance (to 2 decimals, if necessary). If the answer is zero enter "0". Source of Sum of Degrees of Mean p-value Variation Squares Freedom Square Treatments 1,000 Error 800 Total 1,800 At a .05 level of significance, is there a significant difference between the treatments? The p-value is - Select your answer - What is your conclusion? - Select your answer - 00

3/10 Question 5 of 10, Step 1 of 1 Correct A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 413.0 gram setting. It is believed that the machine is underfilling the bags. A 41 bag sample had a mean of 412.0 grams. A level of significance of 0.05 will be used. Determine the decision rule. Assume the variance is known to be 625.00. Enter the decision rule, Answer E Tables E Keypad How to enter your answer Keyboard Shortcuts Reject Ho if z <

7. A study was conducted to compare the amount of salt in potato chips. Random samples of recorded. Assume the populations are normally distributed with equal variances. The 7 A study was conducted to compare the amount of salt in potato chips. Random sampies o. three varieties were obtained and the amount of salt in each 1-Oz portion of potato chp recorded. Assume the populations are normally distributed with equal variances. results are given here: BBQ Cheese- Amount of salt (in mg of sodium) 338, 159, 240, 190 235, 251, 233, 255, 260 Variety flavored Olestra-based 164, 150, 149, 170 a) Identify the explanatory variable. b) Identify the response variable. c) State the appropriate hypotheses to test for a difference in means. d) The appropriate analysis to test for a difference in means would be: a. One-way ANOVA b. Two-way ANOVA c. Three-way ANOVA d. Two-Sample t-test

A researcher wants to measure average cardiovascular health of university students and compare those scores to the average scores in the general population. Assuming that population variance is known, what statistical test is most appropriate for this study?        independent-samples t-test     single-sample t-test     z-test for sample mean     related-samples t-test