ritchieandrew1655 ritchieandrew1655

25-05-2023
Mathematics

contestada

The marks obtained by students from previous statistics classes are normally distributed with a mean of 75 and a standard deviation of 10. Find out
a. the probability that a randomly selected student is having a mark between 70 and 85 in this distribution? (10 marks)
b. how many students will fail in Statistics if the passing mark is 62 for a class of 100 students? (10 marks)

Respuesta :

Otras preguntas

State a persuasive position that you hold. Then consider how your opposition could convince you otherwise and state 3 ways you would be likely to change your mi

In △ ABC, c=19cm, a=84cm and ∠ B=5°. Find the area of △ ABC , to the nearest square centimeter.

In a certain chemical reaction, the number of grams, N, of a substance produced t hours after the reaction begins is given by N(t ) = 16t-4t^2 , where 0

You gram stain a culture that you know contains both the gram-positive and gram-negative bacteria. After staining, all the bacteria appear pink. Which of the fo

The proper thermometer to use to determine internal temperatures of food is a glass bimetallic-stemmed thermometer. A. True B. False

If troy takes out a 24-month loan for $5,000 with an annual percentage rate (apr) of 4.5% compounded annually, approximately how much interest will he pay in a

Inverted organizations empower employees by adding multiple layers of management and long lines of communication.a) Trueb) False

What is the sequence of actions in case of a fire or fire drill?a. Rescue, alarm, confine, evacuate b. alarm, rescue, confine, evacuate c. confine, alarm, rescu

Write an email to the manager of the ark b&b accommodation establishment in Pearl Beach

PRACTICE With a partner, discuss and complete each activity. 1. Which of the items are topics and which are themes? A Love can triumph over hate. B Jealousy NOT