Automobile repair costs continue to rise with the average cost now at $367 per repair. Assume that the cost for an automobile repair has a standard deviation of $88. Answer the following questions about the cost of automobile repairs. What is the probability that the cost will be more than $450

17.36% probability that the cost will be more than $450

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean and standard deviation , the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

What is the probability that the cost will be more than $450

This is 1 subtracted by the pvalue of Z when X =  450. So

has a pvalue of 0.8264

1 - 0.8264 = 0.1736

17.36% probability that the cost will be more than $450

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.