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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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7.Exercise to Reduce Stress A survey by Men's Health magazine stated that 14%
of men said they used exercise to reduce stress. A random sample of 100
men was selected, and 10 said that they used exercise to relieve stress. Use the
P-value method to test the claim at α=0.05
a)Compute the test value. Always round z score values to two decimal places.
z=
b) Find the P-value.
P-value
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- Part of an R output relating X (independent variable) and Y (dependent variable) is shown below. This analysis is based on 11 observations. Using what you know about how all of these values are related, fill in the remaining blanks. Round your answers to 4 decimals in Model Summary box. Round your answers to 2 decimals in the ANOVA table and beyond. Model Summary (4 decimal places each) R R-Squared Adj. R-Squared Pred. R-Squared Source Regression Residual Total ANOVA (2 decimal places each, where necessary) Sum of Squares X Model (Intercept) 0.3632 0.515 1000 RMSE Parameter Estimates (2 decimal places each) Beta Coef. Var. df 29.48 5.7871 Std. Error Std. Beta 0.699 Mean Square -0.72 t F Sig. 3.79 0.0043 -3.091 0.0129 Sig 0.0129arrow_forwardPerson 1 Person 2 Person 3 Person 4 Person 5 Person 6 Person 7 Person 8 Person 9 Height (inches) 75 62 64 63 62 70 69 70 67 Weight (lbs) 325 250 280 220 235 265 200 365 175 (CLO 2) Test a claim that the mean height of people you know is not equal to 64 inches using the p-value method or the traditional method. State H0 and H1. Find the p-value or critical value(s). Draw a conclusion. (CLO 3) Find the correlation coefficient between height and weight. Construct the equation of the regression line and use it to predict the weight of a person who is 68 inches tall.arrow_forwardWhat is the p-value?arrow_forward
- Suppose are running a study/poll about the proportion of men over 50 who regularly have their prostate examined. You randomly sample 102 people and find that 87 of them match the condition you are testing. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho:p = 0.86 Ha:p < 0.86 Calculate the test statistic, rounded to 3 decimal places. Z = Question Help: D Video Submit Question hp % & 3 4 7 8 5arrow_forwardI need help with thisarrow_forwardUse the data below to test the claim that the weight loss was greater with the low fat diet compared to the low carbohydrate diet. Use a 10% level of significance. Low Fat Low Carbohydrate x¯1=3.9lbs s1=4.2lb n1=51 x¯1=2.6lb s1=5.9lb n1=79 Identify the tail of the test What is the P-value? Will the null hypothesis be rejected? Is the initial claim supported?arrow_forward
- In a poll of 1500 adults in July 2010, 780 of those polled said that schools should ban sugary snacks and soft drinks. Complete parts a and b below. 1. Find the value of the test statistic z. z = _____ (Round to two decimal places as needed.) 2. Find the value of the corresponding p-value for this test statistic z. p-value = _____ (Round to three decimal places as needed.) 3. Do you reject or not reject the null hypothesis? 4. b. Choose the best interpretation of the results you obtained in part a.arrow_forwardConvert to raw-scores μ = 3,0 = 2 Z 0.50 -1.00 2.37 -0.75 -1.49 2.64 -1.47 2.64 Blank 1; Blank 2; Blank 3; Blank 4; Blank 5; Blank 6; Blank 7; Blank 8 Blank 1 Blank 2 Blank 3 Blank 4 Blank 5 Blank 6 Blank 7 Blank 8 Add your answer Add your answer Add your answer Add your answer Add your answer Add your answer Add your answer Add your answer Brarrow_forwardCan you help me with d?arrow_forward
- Calculate the correct t-statistics based on the information below. X1 = 200 X2 = 198 n1 = 17 n2 = 17 s1 = 2.45 s2 = 2.35 Let us assume that two groups of students at Tarleton are being compared on their average weights. Do you think the groups are different in terms of weight (measured in pounds)?arrow_forwardCalculate the SSbetween, and the SStotal and the SSwithin for the folowing set of Data? Treatment 1 Treatment 2 Treatment 3 n=10 n=10 n=10 N=30 T=10 T=20 T=30 G=60 SS=27 SS=16 SS=23 EX2=206arrow_forward
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