An experiment was implemented to test the effectiveness of a new veterinarian product for dogs.Animals were randomly assigned to two treatments. Dogs on group treatment A received the newproduct and control dogs on group treatment B received a placebo. At the end of the experiment theconcentrations of a certain hormone (ng/ml) was measured and the following data was obtained:DATA:Observation12345Trt A13.711.713.412.712.410.8EvaluateH₁: µÃ= µß ---against--- HÃ: µÃ ‡ µBTrt B13.814.612.31213.810.71. What is the calculated "t" statistics? (round to the nearest hundredth; place the absolute value of "t"in the box below)2. Given your "t" calculated indicate if you are going to reject or fail to reject the null hypothesis usingan alpha = 0.1 (reject/fail to reject; place your answer right beside the calculated "t" statistics. Do notleave a space between the two answers)

Given The data is as follows: Trt A Trt B 13.7 13.8 11.7 14.6 13.4 12.3 12.7 12 12.4…

Answered: An experiment was implemented to test…

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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A sample of 12 male and 12 female students were surveyed and the amount spent on food last week were recorded. The results are summarized in the table below. Test for the hypothesis that the weekly amount spent on food of male and female students is the same, at a=0.10. Male Female 623 685 537 629 613 517 588 580 651 658 688 582 526 614 579 528 814 655 878 804 660 549 722 617 a. What are the null and alternative hypotheses?b. What is the critical value? (4 decimal points)c. What is the test statistic? (4 decimal points)e. Reject or accept null hypothesis?
Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the bone density test scores that can be used as cutoff values separating the lowest 10% and highest 10%, indicating levels that are too low or too high, respectively. Sketch the region containing the lowest 10% and highest 10%. Choose the correct graph below. OA. -Za Za Q The bone density scores are ☐ OB. -Za Za (Use a comma to separate answers as needed. Round to two decimal places as needed.) ○ C. Q Za -Za D. Q a G Za -Za
Functional foods are those containing nutritional supplements in addition to natural nutrients. For example, orange juice with calcium. A researcher asked students to rate their general attitude towards functional foods on a 7-point scale (higher score is more positive). The results are as follow: Females Males n = 15 n = 12 M = 5 M = 4 SS = 7 SS = 8 a. Do the data indicate a significant difference in attitude for males and females? Use a two-tailed test with α = .05 b. Your alternative hypothesis in symbols is c. The critical tvalues are d. The t-statistic is: e. Your decision is f. r2 is:
An experiment was designed to study oil additives that could reduce polluting the air. Two additives were considered in the study. The two additives X1 and X2 were controlled and the level of the pollution Y is observed. The data were as follows: Y X1 X2 3.9 1.5 2.2 7.5 1.5 4.5 4.4 1.7 2.2 8.7 1.8 4.4 9.6 5.5 4.3 8.5 5.5 4.5 Find the regression equation Is the model valid? Which independent variable is linearly related to Y?
We are testing whether a particular program of low impact exercise can improve the cholesterol level of stroke patients. We enroll a group of stroke patients in our study, and after six weeks we measure their serum cholesterol level in mmol/L, resulting in the following data: 6.1 9.3 6.3 4 9 5.5 6.3 4.2 4.7 7.8 4.3 7.5 9.1 4.2 6.9 8.1 5.6 9.4 8.3 8.8 7.2 5.7 6.5 3.8 3.8 9 9.4 4.5 8 7 4.5 9.4 6.6 4.1 6.6 9.1 3.9 5.3 (a) Construct a 95% confidence interval. _______< u < ______ From an existing study, we know that the average cholesterol level of all stroke patients is 7 mmol/L. We want to know if the level in our patients is significantly different from this. (b) What is our Test statistic? ______ (c) What is the two-tailed p-value of this result? ______
The director of student services at Oxnard College is interested in whether women are just as likely to attend orientation as men before they begin their coursework. A random sample of freshmen at Oxnard College were asked what their gender is and whether they attended orientation. The results of the survey are shown below: Data for Gender vs. Orientation Attendance Women Men Yes 334 367 No 266 370 What can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer t-test for a population mean t-test for the difference between two dependent population means t-test for the difference between two independent population means z-test for a population proportion z-test for the difference between two population proportions The test statistic ? z = (please show your answer to 3 decimal places.) The p-value = t (Please show your answer to 4 decimal places.) Using a TI-84 cal
A pharmaceutical company is running a test comparing two forms of advertising for the same product one which involved a television campaign and the other a print campaign. Market sectors are randomly assigned to receive a particular form of advertising and product sales are recorded during the month following ad campaigns. Using the data provided test if there is a significant difference in product sales by method of advertisement. Use (alpha) a=0.05
The mall has a set of data with employee age (X) and the corresponding number of annual on-the-job-accidents(Y). Analysis on the set finds that the regression equation is Y=100-3X. What is the likely number of accidents for someone aged 30? 97 100 10 none of the above
A research study has two samples, each with n = 6, and the two experimental treatments used in each sample are being compared using an independent-measures t statistic. What is the df value for the t statistic in this study? a. df = 14 b. df = 12 c. df = 11 d. df = 10
An independent-measures research study uses a total of 40 participants to compare two treatment conditions. What is the df value for the t statistic for this study? Question options: a. 39 b. 19 c. 38 d. 18
The director of student services at Oxnard College is interested in whether women are less likely to attend orientation than men before they begin their coursework. A random sample of freshmen at Oxnard College were asked what their gender is and whether they attended orientation. The results of the survey are shown below: Data for Gender vs. Orientation Attendance Women Men Yes 374 522 No 231 263 What can be concluded at the αα = 0.05 level of significance? For this study, we should use? Select an answer t-test for a population mean z-test for the difference between two population proportions? z-test for a population proportion? t-test for the difference between two dependent population means? t-test for the difference between two independent population means? The null and alternative hypotheses would be: H0:H0: Select an answer p1 or μ1 Select an answer > = ≠ < Select an answer p2 or μ2 (please enter a decimal) H1:H1: Select an answer μ1…

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