Mathematics, 03.12.2019 19:31 shadowselena63
In developing an interval estimate for a population mean, the population standard deviation was assumed to be 10. the interval estimate was 50.92 ± 3.5. if population standard deviation is 30, the interval estimate would be: a. 60.92 ± 2.14 b. 50.92 ±12.14 c. 101.84 ± 4.28 d. 50.92 ± 4.28
Answers: 3
Mathematics, 20.06.2019 18:02
Show me how you find y and z and determine what y and z are you i appreciate it : )
Answers: 1
Mathematics, 21.06.2019 14:30
Using the given statements, state whether the conditional statement is true or false. p: 7 + 1 = 0 q: 2 + 2 = 5 is p q true or false?
Answers: 1
Mathematics, 22.06.2019 00:00
(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
Mathematics, 22.06.2019 03:00
This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters
Answers: 2
In developing an interval estimate for a population mean, the population standard deviation was assu...
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