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3 years ago

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A random sample of 15 statistics textbooks has a mean price of $105 with a standard deviation of $30.25. Determine whether a nor

mal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of statistics textbook prices is not normally distributed

1 answer:

Katena32 [7]3 years ago

7 0

Answer:

neither normal distribution nor t-distribution

Step-by-step explanation:

given data

no of sample = 15

mean = $105

standard deviation = $30.25

to find out

whether a normal distribution or a t-distribution

solution

this is neither normal distribution nor t- distribution because here we know t, z is use for normal and difference ( n greater than 30 and Standard Deviation used z and the for n less than 30 , Standard Deviation not known use for t distribution ) so it we can say it is neither normal distribution nor t- distribution

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<span>
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