Sample mean and sample standard deviation-random selection

Assignment Help Basic Statistics
Reference no: EM1320479

At the beginning of the course of Statistical Methods I, the instructor recommended that students devote 3 hours per week for the duration of the 13-week semester, for a total of 39 hours. It is known that the time spent on studying statistics follow a normal distribution. Throughout the course duration, students were claiming that they were following the instructor's recommendation. At the course completion, a random sample of 10 students enrolled in the course was drawn where each student was asked how many hours he or she spent doing homework in statistics. The data are listed below: 

45

38

37

40

44

38

46

37

42

43

Calculate the sample mean and sample standard deviation.

Reference no: EM1320479

Questions Cloud

Analysis and recommendations for firm : Describe the situation facing Mensa at the time of the case. This should include the major issues facing the company and the decisions that need to be made. You are to spend no time on corporate history. You must consider the past, but your analys..
Testing hypothesis of average price of gasoline : Test hypothesis that average price of gasoline in western states is higher than national average for Continental USA and the District of Columbia, i.e., higher than $3.74.
Find the probability that a loaf is smaller : Find the probability that a loaf is smaller than twenty-three ounces?
Automobile emissions controls were not mandated by law : If automobile emissions controls were not mandated by law, would people willingly buy also install them
Sample mean and sample standard deviation-random selection : Calculate the sample mean and sample standard deviation.
Estimating the output : Provided: enum cropType {WHEAT,CORN,RYE,BARLEY,OATS} cropType crop;
Find out that this can be effective for our economy : When looking at the role of tax cuts, you will find out that this can be effective for our economy.
Using minimax regret criterion : Using minimax regret criterion, what decision should be made by the decision maker?
Determining confidence interval for mean growth rate : Bougainvilleas, mean growth rate was 2.23 inches/week and sample standard deviation was 0.77 inches/week. Determine a 90% confidence interval for mean growth rate of all Bougainvilleas.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determining the values of mean m

Determine the values of mean M and standard deviation s for original sample?

  Confidence interval for average number of credit card

Use this information to compute a 95% confidence interval for average number of credit cards carried by students.

  Computing a linear regression equation

Estimating a linear regression equation to predict the future values of the dependent variable Y.

  Grade point averages-normally distributed

The grade point averages for 10 randomly selected high school students are listed below. Assume the grade point averages are normally distributed.

  Formulate an integer program that maximizes hagger''s profit

Hagger Engineering Corporation is considering undertaking several proposed projects for the next fiscal year.  The projects, the number of engineers and the number of support personnel necessary for each project.

  A candy bar manufacturer desires to set up a variables

To sketch the 3-sigma X-bar chart and R-chart parameters. A candy bar manufacturer desires to set up a variables control chart for the net weight of its candy bars.

  Determining confidence interval

Determine a 95 percent confidence interval for the population mean.

  Determining the stock-s beta

Beta and required rate of return stock has required return of 11%; risk-free rate is 7%t; and market risk premium is 4 %. Determine the stock's beta?

  Mean and variance based on frequency distribution

Given sample data arranged in a frequency distribution table. Use Excel to calculate the sample mean and variance from this data set.

  Fitted logistic regression model

We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens

  Degree of confidence

Using the 0.95 degree of confidence, what is the interval estimate for the population proportion (to the nearest tenth of a percent)?

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the 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