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A sample of eight college students revealed they owned the following number of CDs. 52, 76, 64, 79, 80, 74, 66, 69
a. What is the mean number of CDs owned?
b. What is the median number of CDs owned?
c. What is the 40th percentile?
d. What is the range of the number of CDs owned?
e. What is the standard deviation of the number of CDs owned?
after computing a confidence interval the user believes the results are meaningless because the width of the interval
1.an inspector inspects large truckloads of potatoes to determine the proportion p with major defects prior to using
a recent study focused on the number of times men and women send a twitter message in a day. the information is
two players put one dollar each into a pot. they decide to throw a pair of dice alternately. the first one who throws a
Compute the mean, median, mode and standard deviation for the following discrete probability distribution.
There are three flight phases. At α = 0.05, is the cockpit noise level independent of flight phase?
Can you create descriptive statistic from the information and what is the highest level of school you have completed or the highest degree you have received?
Construct the 95% confidence interval for the mean starting salary of the IT employees with an under graduate degree using t-distribution.
What is the distribution of X? State its mean and variance.
From the test data, can we determine whether the oven has an effect on the cake's density? The null hypothesis should be: Oven has no effect on density.
Assume that these two ways to buy tickets are independent. The probability that someone who tries to buy tickets through the Internet AND by phone will obtain tickets is equal to?
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
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