Mathematics, 16.05.2021 03:00 starlightmoon213
There are fifteen songs on your playlist. Nine of them are country and six are pop. With random shuffle and no repetition, you listen to seven songs. What is the
probability that you listened to exactly
four country songs?
Answers: 1
Mathematics, 21.06.2019 20:30
Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about maxโs data must be true? a) the median of maxโs data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 2
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 ฤโฆ). 2b. find the sample variance of x. find the variance of x ฤโฆ. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (รฎฤพ). 2d. test the hypothesis that รฎฤพ 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 00:30
Which equation can be solved to find one of the missing side lengths in the triangle? cos(60o) = cos(60o) = cos(60o) = cos(60o) = mark this and return
Answers: 3
Mathematics, 22.06.2019 02:00
Which polynomial correctly combines the like terms and expresses the given polynomial in standard form? 8mn5 โ 2m6 + 5m2n4 โ m3n3 + n6 โ 4m6 + 9m2n4 โ mn5 โ 4m3n3 n6 + 7mn5 + 14m2n4 โ 5m3n3 โ 6m6 โ2m6 โ 5m3n3 + 14m2n4 + 7mn5 + n6 14m2n4 + 7mn5 โ 6m6 โ 5m3n3 + n6 n6 โ 6m6 + 7mn5 + 14m2n4 โ 5m3n3 show work
Answers: 1
There are fifteen songs on your playlist. Nine of them are country and six are pop. With random shuf...
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