Mathematics, 01.06.2020 20:02 tdahna0403

A computer manufacturer estimates that its line of minicomputers has, on average, 7.1 days of downtime per year. To test this claim, a researcher contacts seven companies that own one of these computers and is allowed to access company computer records. It is determined that, for the sample, the average number of downtime days is 4.1, with a sample standard deviation of 1.4 days. Assuming that number of downtime days is normally distributed, test to determine whether these minicomputers actually average 7.1 days of downtime in the entire population. Let α = .01.
What is value of the test statistic

Answers

Answer from: Quest

m∠a is 90°

m∠b is 40°

Need finding and figuring out for angle a & b:

Answer from: Quest

where is abdul's work? don't see that anywhere posted : /

step-by-step explanation:

Answer from: Quest

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)

Suppose you are a designer making the traffic sign below. 1. what is the sum of the interior angles

Answer from: Quest

i believe it’s 165 because if u add 137 and 58 u get 195 and then subtract that from 360 and there’s ur answer

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A computer manufacturer estimates that its line of minicomputers has, on average, 7.1 days of downti...