What is the population standard deviation

Assignment Help Basic Statistics
Reference no: EM1318125

Estimating Standard deviation based on Z score.

A population of scores has p = 44. In this population, an X value of 40 corresponds to z = - 0.50. What is the population standard deviation?

A. 2
B. 4
C. 8
D. 6

Reference no: EM1318125

Questions Cloud

Calculation of probability and normal distribution : Calculation of Probability - Normal Distribution - find the probability that a randomly selected employee
About snmp : What do you understand by the term SNMP? Explain the role which SNMP plays in managing the networks.
Find the following conditional probabilities : Find the following conditional probabilities.
Improving the speed of e-mails : Insurance, a multi million-dollar life insurance firm, has asked you to help troubleshoot the network at its corporate headquarters.
What is the population standard deviation : A population of scores has p = 44. In this population, an X value of 40 corresponds to z = - 0.50. What is the population standard deviation.
Determining critical value for left-tailed test : Using standard normal table, show critical value for left-tailed test with α = 0.02.
Impact to decisions made about company : Find out three key ratios that should be employed when evaluating the financial performance of company, indicating what information this will reveal to an analyst and the impact to decisions made about the company.
Sum of array elements : Provided an array of ints named x and an int variable named total which has already been described, write down some code which places sum of all the elements of the array x into total.
Find how any different passwords are possible : Find how any different passwords are possible.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Distribution-approximately normal

The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.

  Predicting probability values based on discrete distribution

If a proposal evaluator randomly selected two proposals, what is the probability that both of them met the specified?

  Steps for simulation using crystal ball

Crystal Ball requires the following steps:

  Statistical hypothesis test for the given sample

Statistical Hypothesis test for the given sample

  Mean-standard deviation of the sampling distribution

What is the mean and standard deviation of the sampling distribution when we take all samples of size25?

  Test of single population mean

At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?

  Determining range and standard deviation of times

Determine the range and standard deviation of the times.

  What is the probability of woman receiving a salary

According to Advertising Age, average base salary for women working as copywriters in advertising firms is higher than average base salary for men. The average base salary for women is $67,000 and the average base salary for men is $65,500 (Workin..

  Mean of the data represented in this stemplot

Consider the following stemplot.  The mean of the data represented in this stemplot ?

  Interpreting the meaning of p-value

At 0.01 level of significance, is there evidence that mean price is higher at Whole Foods Market than at Fairyway supermarket? Interpret the meaning of p-value in (i).

  Confidence interval for proportion of delinquent customer

What is the 95% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?

  Confidence interval for the true mean weight

Construct a 90 percent confidence interval for the true mean weight. Describe factors which might cause variation in the weight of Tootsie Rolls during manufacture.

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