Wayne is recording the number of hours he sleeps over different periods of time. The table provided shows the number of hours Wa
yne sleeps during the respective amount of days.
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Answer:
The answer is below
Step-by-step explanation:
a) For a normal model the sample size has to be equal or greater than 30 so that it can be a normal distribution.
b) Given that:
μ = 11.2 minutes, σ = 4.8 minutes, n = 45
The z score determines how many standard deviations the raw score is above or below the mean. It is given by:
For x < 10 minutes
Therefore from the normal distribution table, P(x < 10) = P(z < -1.68) = 0.0465
so, is just that product, recall to use "<span>3.1416 as the value of π".</span>