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Expected number of spots showing

Suppose that the number of dice thrown is a binomial random variable with n = 10 and p = 0.98. What is the expected number of spots showing on the thrown dice? Expected number of spots =

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## Q : Calculate the t-statistic for a test

He also recorded speeds of a random sample of 53 silver cars on a highway to find a mean of 69.02 mph and a variance of 8.84. Calculate the t-statistic for a test of the difference between the two sample means. (Report the value of t to 2 decimal