Mathematics, 21.10.2019 23:00, DarinKing2005
Mackenzie investigated the relationship between the number of hours studying and the test score for some of the students in her class. she constructed the scatterplot below.
which statement is correct based on the scatterplot?
there is no relationship between hours studying and test score because the points do not form a straight line.
there is no relationship between hours studying and test score because there are multiple test scores for 2 hours studying.
there is a relationship between study hours and test score. as the hours of studying increase, the test scores increase.
there is a relationship between study hours and test score. as the hours of studying increase, the test scores decrease
Answers: 2
Mathematics, 21.06.2019 14:00, smilingntn33p7pqpp
50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.
Answers: 3
Mathematics, 21.06.2019 23:00, grettelyesenia
Find the dimensions of the circle. area = 64π in.² r= in.
Answers: 1
Mathematics, 22.06.2019 00:00, bri9263
(20 points) a bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. the bank prides itself on its mortgage application process and decides to investigate the claims. the bank manager takes a random sample of 20 customers whose mortgage applications have been processed in the last 6 months and finds the following wait times (in days): 5, 7, 22, 4, 12, 9, 9, 14, 3, 6, 5, 15, 10, 17, 12, 10, 9, 4, 10, 13 assume that the random variable x measures the number of days a customer waits for mortgage processing at this bank, and assume that x is normally distributed. 2a. find the sample mean of this data (x ě…). 2b. find the sample variance of x. find the variance of x ě…. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (îľ). 2d. test the hypothesis that îľ is equal to 7 at the 95% confidence level. (should you do a one-tailed or two-tailed test here? ) 2e. what is the approximate p-value of this hypothesis?
Answers: 2
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