Mathematics, 24.02.2020 18:52 cheezloord8472
An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The particular interest was whether higher income would result in shoppers spending more on groceries. A random sample of shoppers at a local supermarket was obtained, and a questionnaire was administered asking about the weekly income of the shopper’s family and the grocery bill for that week. The gender of the shopper was also obtained. The correlation was found to be r = 0.649 . The amount of variation in the response explained by the regression line is: 0.421 %. 64.9 %. 42.1 %. 0.649 %.
Answers: 1
Mathematics, 21.06.2019 22:00
Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.
Answers: 2
Mathematics, 22.06.2019 01:10
Stefania pours 2 liters of orange juice and 1.5 liters of pineapple juice into a punch bowl. how many liters are in the punch bowl?
Answers: 1
Mathematics, 22.06.2019 03:30
Solve the equation for y. -1 = 1/3y + 11. will give 5 stars if answered correctly!
Answers: 2
Mathematics, 22.06.2019 04:20
1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?
Answers: 3
An economist conducted a study of the possible association between weekly income and weekly grocery...
Mathematics, 23.06.2019 09:00
Mathematics, 23.06.2019 09:00
Mathematics, 23.06.2019 09:00
Chemistry, 23.06.2019 09:00
Social Studies, 23.06.2019 09:00