karenodonnell576 karenodonnell576

11-05-2020
Mathematics

contestada

A survey asks a random sample of 2500 adults in Ohio if they support an increase in the state sales tax from 5.25% to 5.50%, with the additional revenue going to education. Let X denote the number in the sample that say they support the increase. Suppose that 30% of all adults in Ohio support the increase. 8. The mean of X is a. 30. b. 525. c. 750. d. 1750.

Respuesta :

topeadeniran2 topeadeniran2

16-05-2020

Answer: 750

Step-by-step explanation:

From the question,

n=2500

P= 30% = 30/100 = 0.30

X ~ Binomial ( n, P)

E( X ) = n × p = 2500 × 0.30

E (X) = 750

The mean of X is 750

Answer Link

Otras preguntas

You're on a blind date and you notice that your date appears interested in you and excited to be with you. You know this because your date is using animated voc

Which PEN testing methodology is Open Source and tests the operational security of physical locations, workflow, human security testing, physical security testi

Which factors affect how people develop their body image? Select three options. intelligence birth year culture family health care

Korey is planning to open a comic book store. When the store opens, he plans to be the only employee. As the business grows, he will extend his hours of oper

which statement best describes a line in slope-intercept form when the coefficient of the coefficient of the x term is positive

the 1860s Gregor Mendel performed numerous dihybrid crosses between pea plants. Dihybrid crosses involve the study of the inheritance patterns related to two di

g The parents of three children, ages 1, 3, and 6, wish to set up a trust fund that will pay X to each child upon attainment of age 18, and Y to each child upon

HELP! I HAVE BEEN STUCK FOR HOURS! In a large marathon, runners start the race in stages. Leanna started in group E and ran at a rate of 4.8 miles per hour. Dur

Discuss the various ways socializing agents may contribute to an institutionalized system of social inequality. Give a few examples to support your position.

Collin bought 3 pound bags of chocolate chips at the grocery store. How many pounds of chocolate chips did he buy. Write a multiplication expression to represen