Mathematics, 26.02.2020 16:42 brooklynunderwood46
If Riley places $50 in an envelope every month, how long will she need to save to be able to afford the new refrigerator?
plz help
A, 19 months
B, 21 months
C, 24 months
D, 26 months
Answers: 3
Mathematics, 21.06.2019 23:30
Peyton's field hockey team wins 4 games out of every 7 games played. her team lost 9 games. how many games did peyton's team play?
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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 02:50
Asap! i need this done today and i really don’t understand it. some one ! will mark
Answers: 1
Mathematics, 22.06.2019 03:30
Louis wants to give \$15 to kids who need school supplies. he also wants to buy a pair of shoes for \$39. how much money will he have to save for both?
Answers: 1
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