Determining the probability of mean annual snowfall

Assignment Help Basic Statistics

Reference no: EM1313774

Q1) Amount of annual snowfall in certain mountain range is normally distributed with mean of 109 inches, and standard deviation of 10 inches.

a) Determine the probability that mean annual snowfall during 40 randomly picked years will exceed 111.8 inches?

b) Find out the probability that mean annual snowfall during 40 randomly picked years will lies between 105 inches and 112 inches?

2) Introductory salaries for medical billing clerks are normally distributed with mean of $24,800 and standard deviation of $2850.

a) What percent of introductory salaries are less than $23,000?

b) What percent of introductory salaries lies between $21,250 and $23,750?

Reference no: EM1313774

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