Probability relating to feel secure in house

Assignment Help Basic Statistics
Reference no: EM1392473

30% of households say they would feel secure if they had $50,000 in savings. you randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings. find the probability that the number that say they would feel secure is:

a) exactly five

b)more than five

c)at most five.

Reference no: EM1392473

Questions Cloud

How to determine the tension in the string : A 10.5 kg uniform board is wedged into a corner and held by a string at a 50 degree angle. Determine the tension in the string. Hint: take torques about the corner and assume any length for the board.
Confidence interval-test of hypothesis : According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A consumer watchdog agency selects a random sample of 40 taxpayers and finds the standard deviation of the time ..
What is the total work completed on the block : What is the total work W_fric completed on the block by the force of friction as the block moves a distance 8 rm m up the incline.
Description of stat problem : You want to estimate today's mean temperature, so you make a series of measurements (taken as a sample) throughout the day. The mean of these measurements is 63 degrees Fahrenheit, and their standard deviation is 3.4 degrees Fahrenheit.
Probability relating to feel secure in house : 30% of households say they would feel secure if they had $50,000 in savings. you randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings. find the probability that the number that say they would feel secu..
What was the wheel angular acceleration as it slowed down : At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 29.0 rad/s^2 until a circuit breaker trips at time t = 2.50 s. From then on, the wheel turns during an angle of 440 rad as it coasts to a..
Understanding the normal distribution : Critically discuss understanding the normal distribution and the factors that affect its shape important in solving business and marketing-related questions?
When should you gather information outside a case analysis : When should you gather information outside a case analysis by going to the library or using the Internet
What is the overall magnification of this microscope : The object to be viewed is placed 2mm beyond the focal point of objective lens. What is the overall magnification of this microscope.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Quick rule to verified confidence interval for proportion

Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.

  Determining standard deductions with standard deviation

Survey of 16 tax returns reports families with incomes between $75,000 and 100,000 have on average $8,562 in Standard Deductions with the standard deviation of $1,800.

  Valid pair of null and alternative hypothesis

Are the following statements a valid pair of null and alternative hypothesis?

  Formulation of linear programming problem

Formulate a linear programming model for this problem.

  Probability related to packaging equipment company

Pretend you are in charge of a packaging equipment company that is filling boxes of cereal. From past experience we know the population's mean weight of the filled boxes is 300 grams (and we know the distribution of grams is approximately normal).

  Reasons of developing frequency distribution

Critically discuss the purpose of developing a frequency distribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequency distribution contain qualitative data? Why?

  Determining if z follows standard normal distribution

Determine following probabilities where Z follows standard Normal distribution?

  Testing hypothesis with single mean

Based on the information, what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?

  Survey before finding one credit cards

College students are a major target for advertisements for credit cards. At a university, 65% of students surveyed said they had opened a new credit card account within the past year. If that percentage is accurate, how many students would you exp..

  Normal approximation to binomial distribution

Assuming no discrimination based on gender, what is the probability of getting 41 or fewer women when 100 new employees are hired?

  Legitimate probability distribution for this situation

What is the probability you pick a plum and Which of the following is a legitimate probability distribution for this situation

  The mean return for a random sample

The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57.  Build a 95 percent confidence interval for mu, population mean.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd