1) Set Up 0: According to the Retail Milk Prices Report produced by the United States Department of Agriculture, the mean price for a gallon of 2% milk in Kansas City, MO in November 2022 is the highest in the country at $5.72. A sample from 38 different grocery stores in Kansas City in December found the sample mean price per gallon of $5.55. Milk prices have a population standard deviation of $0.70 and are normally distributed. Suppose an economist is asked if the price of milk per gallon has decreased in December. What is the null hypothesis for this test?

Group of answer choices

H0: = 38

H0: = 5.72

H0: = 0.70

H0: = 5.85

2) Use Set up 0. Using the proper alternative hypothesis and at a 5% significance level, what does the researcher conclude?

Group of answer choices

Do not reject H₀.

Reject H₀.

Reject H₁.

None Apply.

3) the hypothesis that 46% of those families who plan to purchase a vacation residence in Florida want a condominium, the null hypothesis is p = 0.46 and the alternate is p ? 0.46. A random sample of 550 families who planned to buy a vacation residence revealed that 235 families want a condominium. What decision should be made regarding the null hypothesis?

Group of answer choices

p-value

p-value > 0.10, Fail to reject the null

p-value

p-value > 0.10, Reject the null

4)

The following correlations were computed as part of a multiple regression analysis that used education, job, and age to predict income. Which independent variable has the weakest association with the dependent variable? _-:I 1roooo Education 0,9356 1,0000 Job 02780 -1 1586 1 0000| Age 04125 00215 07895 10000 0 Income 0 Age 0 Education 0 Job Set up 1: A math professor teaches a 3-credit hour statistics class and is looking at exam scores (Y) and the number of hours studying (X). (Assume the regression equation is of the form Y = a + bX.) She collected data on exam scores and the number of hours students report studying weekly outside class, found in Table 1, and created Figure 1. (Assume this is a population.) What is true about Point A in Figure 1? TABLE 1 (A) (B) (C (D) (E) (F) Weekly Hours Observation No. tudying Exam Score SUx SUy SUx*SUy (Y) (B) - Mean X) ((C) - Mean Y) + * STDEV X) STDEV Y) (D)*(E) 2.0 52.0 -0.97 -1.37 1.33 6.0 88.0 0.91 5.5 87.0 0.34 0.85 0.29 82.0 1.27 0.53 0.68 40 85.0 -0.22 0.72 -0 16 25 60.0 -0.79 -0.86 0.68 5.0 68.0 0.15 -0.35 -0.05 3.0 79.0 -0.60 0.34 -0.20 2.5 -0.79 -0-10 0.08 3.5 79.0 -0.41 0.34 -0.14 15 56.0 -1.16 -1.11 1.29 10.0 94.0 2.02 1.29 2.61 7.5 85.0 1.09 0.72 0.78 0.5 35.0 -1.54 -2.44 3.75 7.5 82.0 1 09 0.53 0.58 4.6 73.6 Sum of SUX*SUY = 11.98 Standard Deviation 2.7 15.8 Mean X= 4.60 STDEV X = 2.67 Mean Y = 73.60 STDEV Y = 15 81 (using Excel) 0.7999 Figure 1 100.0 Mean of Hours 95.0 90.0 A . 85.0 BOO Mean of Exam Scores Exam Score 75.0 70 0 650 60.0 S5.0 50.0Figure 1 100.0 Mean of Hours 95.0 90.0 A 85.0 Mean of Exam 80.0 Scores Exam Score 75 0 70 0 65 0 60.0 50.0 5.0 60 70 8.0 9.0 10 0 20 3.0 4.0 Hours Studying O The standard unit (Z-score) for X is negative O The standard unit (Z-score) for X is negative and for Y is positive O The standard unit (Z-score) for Y is positive O The standard unit (Z-score) for Y is negative and X is positive