In a random sample of 92 automobile engine crankshaft bearings, 24 have a surface finish that is rougher than the specifications allow. Construct a 99% two-sided confidence interval for p, the proportion of bearings with surface finish rougher than allowed specification. What is the upper bound of this 2-sided confidence interval

The 99% two-sided confidence interval for p, the proportion of bearings with surface finish rougher than allowed specification is (0.1430, 0.3788). The upper bound of this 2-sided confidence interval is 0.3788.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

In which

z is the zscore that has a pvalue of .

In a random sample of 92 automobile engine crankshaft bearings, 24 have a surface finish that is rougher than the specifications allow.

This means that

99% confidence level

So , z is the value of Z that has a pvalue of , so .

The lower limit of this interval is:

The upper limit of this interval is:

The 99% two-sided confidence interval for p, the proportion of bearings with surface finish rougher than allowed specification is (0.1430, 0.3788). The upper bound of this 2-sided confidence interval is 0.3788.

dunno

step-by-step explanation:

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas