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What is P(Σx < 1,186)?

Short Answer

Expert verified

Thevalue probability thatPX<1186is approximately15.86%

Step by step solution

01

Given Information

According to the provided details, the sample size of customers is 400 with a mean 3 and the standard deviation is0.7.

02

Explanation

To calculate the probability that P(ΣX<1186), use the Tl-83 calculator. For this, click on 2nd, then DISTR, and then scroll down to the normal CDF option and enter the provided details. After this, click on ENTER button on the calculator to have the desired result. The screenshot is given below:

Therefore, the value probability thatPX<1186is approximately15.86%

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