A random sample of 169 observations is to be drawn from a population with a mean of 80 and a standard deviation of 39. find the
probability that the mean of the sample will exceed 85.
1 answer:
Mu=80, sigma=39, X=85
Z=(X-mu)/sigma = 5/39=0.128=0.13
P(X<=85)= 0.5517 (from Z-table)
so, P(X>85)=1-0.5517=0.4483 approx. thats 44.8% probability.
You might be interested in
The question asks per week. So 1.5 cups times 7 days is 10.5 cups.
The pipe leaks 10.5 cups every week.
Answer:
2,676
Step-by-step explanation:
2,676=223x12
The answer should be 42 times.
Answer: 20+35=55+20=75
Step-by-step explanation:
