Description of probability calculation-z score

Assignment Help Basic Statistics
Reference no: EM13100514

X has a normal distribution with a mean of 80.0 and a standard deviation of 3.5. Find the following probabilities:

A) p(z<78.0)

B) p(75.0<X<85.0)

C) p(x>86.0)

Reference no: EM13100514

Questions Cloud

Determine the percentage of samples of size : Scores of an aptitude test are normally distributed with a mean of 280 and a standard deviation of 30. Determine the percentage of samples of size 4 that have a mean score within 21 points of the population mean score of 280.
Information about binomial distribution : Given a binomial distribution with n=29 and p=0.83, would the normal distribution provide a reasonable approximation? Why or why not.
Write implications for treatment from cultural influences : Write down the implications for treatment from the following cultural influences: A 1st generation 50 year old greek american female is looking treatment as her husband is verbally abusive.
How much work does the string : How much work does the string do on the boy if the boy walks a horizontal distance of 11m away from the kite? How much work does the string do on the boy if the boy walks a horizontal distance of 11m toward the kite.
Description of probability calculation-z score : X has a normal distribution with a mean of 80.0 and a standard deviation of 3.5. Find the following probabilities:
Need the test effect and test statistic : I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
Rank the model of dimensions of leadership competency : How would you rank the model of the Dimensions of Leadership Competency if you have to rank from most important to least and Why?
What is the recoil speed of the nucleus : In one such decay, the electron and the neutrino are emitted at right angles to each other. The electron(mass 9.11 x 10^-31kg) has a speed of 5.00×10^7m/s and the neutrino has a momentum of 8.10×10^-24kg m/s. What is the recoil speed of the nucleu..
Setting up a probability distribution : Fast Service Store has maintained daily sales records on the various size 'Cool Drink' sales. These are shown in the following table:

Reviews

Write a Review

Basic Statistics Questions & Answers

  Find the derivative of the function

Use the definitional formula given below to find the derivative of the function.

  Desired margin of error

How large a sample should be taken if the desired margin of error is?

  What is the likelihood at least one of selected flights

Assume the likelihood that any flight on Northwest Airlines arrives within 15 minutes of the scheduled time is 0.90. We choose four flights from yesterday for study.

  Data collection by cell phones-random sample of households

A cell phone company collects data from a random sample of 500 households. The results indicate that 135 of the households would add an extra cellular number, provided it was offered at a reduced monthly cost.

  Forecast the rental and leasing revenue

Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..

  Obtaining a test statistic and p-value

Obtain a test statistic and p-value. Interpret the results at = .01.

  Hypotheses to determine mean

Formulate the hypotheses that can be used to determine whether the mean of all account balances is significantly different from $1,150

  Distribution of scores in sample-identify data skewed or not

A record executive is interested in the popularity of her label's newest band, The Standard Deviations. She asks 10 people how many Standard Deviations songs they know.

  Estimating the cost of life saved

Suppose that 0.6 of the present 25,000 vehicle occupants killed in collisions were not wearing seat belts. There are about 170 million registered cars and trucks on the highway today.

  To test the claim using one proportion z test

would this prove that they are exceeding their goal, using  α   = .025?

  Level of significance test- critical and p-value approaches

At the 5% level of significance test whether the bottling process is carried out accurately or whether the filling machinery needs calibration. Use both the critical and the p-value approaches.

  Ten-step study plan with example

Write ten-step study plan with suitable example that will permit you to analyze your data.

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