HELP ASAP. 31) To determine if the average sales per week for store A is greater than the averagesales per week for store B you take sales data on 12 weeks from each store. You testthe hypothesis Ho:HA ≤ MB versus Ha: HA > HB and find a p-value of 0.62. Todetermine if the average sales per week depends on store, you wish to test thehypothesis Ho: A = HB versus H₂: MAHB. What is the p-value for this hypothesistest?A) 0.76B) 0.38C) 0.62D) 0.31E) 1.2432) To determine if the proportion of undergraduate students who are left handed depends ontheir class standing (Freshman, Sophomore, Junior or Senior) you identify the hypothesisHo: PFreshman = Psophomore = PJunior = PseniorHa: Not all population proportions are equalTo test the hypothesis you survey 180 students, records their class standing and ask them if theyare left handed (Yes or No). The data appears in the table below (Left Handed worksheet).LeftHandedYesNoTotalFreshman42630Class StandingSophomore64450Junior53540Senior65460Total21159180Using the sample data, you calculate a test statistic of 0.275. What is the p-value forthe hypothesis test?A) 0.05

Answered: Image /qna-images/answer/906e5cf2-190b-4fd9-89a5-4d617c574da3.jpg

Answered: 31) To determine if the average sales…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 94E

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Find the equation of the regression line for the following data set. x 1 2 3 y 0 3 4
Find the mean hourly cost when the cell phone described above is used for 240 minutes.
5. In a large class, the instructor ran a regression with the independent variable(x) as the gradc on the first cxam and the dependent variable(y) bcing the grade on the second exam She found the cquation to be: Y 29.25+57X Knowing that your friend got a 78 on the first cxam, what value would you predict she got on the socond exam? a) 71.43 b) 72.57 c) 78.00 d) 73.71 6. A test result is one that detects the condition when the condition is present is called. a) Truc Negative b) False positive c) Sensitivity d) True Positive 7. A test result is one that detects the condition when the condition is absent is called. a) True Negative b) False positive c) Sensitivity d) True Positive IN 8. The proportion of positives that correspond to the presence of the condition is called The formula is TN+FP a) Specilicity b) Predictive value positive c) Sensitivity dy Predictive valuc negalivc
c) Show that the coefficient of determination, R², can also be obtained as the squared correlation between actual Y values and the Y values estimated from the regression model where Y is the dependent variable. Note that the coefficient of correlation between Y and X is Eyixi r = And also that ỹ = ŷ (18.75)
The regression equation for for the association between BMI and total cholesterol level is: y = 28.07 + 6.49x A.) Suppose a participant has a BMI of 26. What would we estimate the total cholesterol to be? B.) Suppose two individuals have a mean BMI that differs by 3 units. What is the estimated difference in total cholesterol. C.) What ranges of BMI should the equation be used to predict total cholesterol?
If the slope of a regression line (b1) is 1.5, then a) for every unit of change in x, there is a change of 1.5 units in y b) for every unit of change in y, there is a change of 1.5 in x. c) the score of each case is 1.5 times higher on yt han on x d)y causes X
ONLY need for Part D, E, F, Thank you!
I would need some help with finding the best predicted value of y corresponding to the given value of x.
Consider the model y=-2.45x+7.18 derived from data between x=4 and x=10. What value of x represents interpolation of the data?
You work as a data scientist for a real estate company in a seaside resort town. Your boss has asked you to discover if it's possible to predict how much a home's distance from the water affects its selling price. You are going to collect a random sample of 9 recently sold homes in your town. You will note the distance each hame is from the water (denoted by X, in km) and each home's selling price (denoted by y, in hundreds of thousands of dollars). You will also note the product X-y oaf the distance from the water and selling price for each hame. (These products are written in the row labeled "Xy")- (a) Click an "Take Sample" to see the results for your random sample. Distance from the water, X 3.8 21 1.3 0.2 29 21 4.4 1.3 1.8 (In lam) Selling price, y (In hundreds of thousands of dollars) Tako Sample 5.7 10.3 17.1 14.8 8.2 1.4 6.1 10.4 9.6 xy 21.66 21.63 22.23 2.96 23.78 15.54 26.84 13.52 17.28 Sand data to calculator v Based on the data from your sample, enter the indicated values…
Q1. The values of X and Y are given in the following table. X0235 8. Y 157 11 | 17 = 18. Y = 41, xY 222, > x² = 102, > Yy² X = 485 a) Find the Coefficient of Correlation b) Find the Coefficient of Determination and Coefficient of Non-Determination? c) Calculate the line-of-best- t (linear regression line) Ý = a + bX, d) If x = 8, estimate the response y.
Darley and Latané (1968) recorded the speed with which subjects summoned help for a person in trouble. Subjects thought either that they were the only one listening to the person (Group 1, n 5 13), that one other person was listening (Group 2, n 5 26), or that four other people were listening (Group 3, n 5 13). The dependent variable was the speed with which the person summoned help (5 1/time × 100). The mean speed scores for the three groups were 0.87, 0.72, and 0.51, respectively. The MSerror was 0.053. Reconstruct the analysis of variance summary table. What can you conclude?

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