mohamedsayed2019 mohamedsayed2019

01-07-2021
Mathematics

contestada

The service times for customers coming through a checkout counter in a retail
store are independent random variables with mean 1.5 minutes and variance 1.0.
Approximate the probability that 100 customers can be served in less than 2
hours of total service time.

Respuesta :

loconte loconte

01-07-2021

Answer:

38.2 %

Step-by-step explanation:

120/100 = 1.2 (average time)

(1.2 - 1.5)/1 = -.3

z table value for "-.3" is .3821

Answer Link

Otras preguntas

In your own opinion, which government functions would be best handled by state governments? Check any that apply. O making treaties with foreign countries D run

Jua Kali Products Ltd has been in operation for the last 10 years. Its annual revenue and cost functions take form of quadratic functions. The following data wa

Wyatt is making a salad using tomatoes, cucumbers, and carrots. This table gives the cost, per kilogram, of each ingredient, and the amount, in kilograms, that

What is a causative agent of Encephalitis?

heeeellllp... ... ... ... ... ... ...

What is it that has eyes but does not see?answer with intelligence.

a) "Tranings are are the most important part of any occupation": justify it

7. Two billiard balls of equal mass, one blue and the other red, slide towards each other at 2.0m/s in opposite directions towards each other. They collide head

Which event supports the theme “Wartime can bring out the worst in people”? Miep and Mr. Kraler bring food, books, and newspapers to those in hiding. Anne share

Maya express charges 15 dollar for each person and great holiday charges fixed 84dollar and extra 12 dollar for a person. If the total amount charged by each co