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Suppose from a sample of data, we have X passengers nally show up for a ight while n people booked the tickets.
(a). State the hypothesis test (with the formula of test statistic) could be used to see if the show-up ratio of people booked tickets is larger than 0.7.
(b). Find the formula for the P-value for the hypothesis test, and state your understanding of it and make sure it is understandable by people (mostly your future colleagues, bosses or clients) without much statistic background.
A GSS asked. "What do you think is the ideal number of children for a family to have? the 497 female who responded had a median of 2, mean of 3.02 and standard deviation of 1.81 (a) Report the point estimate of the population mean.
Perform a chi-square test on the following data:
What symbol is used to represent the mean of the sampling distribution of y-(ybar)? Explain and what symbol is used to represent one value from the sampling distribution of y-(ybar)? Explain
Department store accepts three types of credit cards, MasterCard, Visa, and their own store card. Charges are normally distributed. A random sample of 18 credit card purchases included 6 MasterCard
Analysis of data sets assignment
Find the z-score for each score in the population. Transfer the original population into a new population of N=5 scores with a mean of μ=60 and a standard deviation of σ=8
An engine system consists of three main components in a series, all having the same reliability.
Suppose the following statistics were calculated from data gathered from a randomized block experiment with k = 4 and b = 10:
For the most recent year available the mean annual cost to attend a private university in the US was $26,889. Assume the distribution of annual costs follows a normal probability distribution and the standard deviation is $4,500. 95% of all studen..
Compute the mode, median and mean for the college students and compute the mode, median and mean for the parents' data
To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
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