Explaining strong negative correlation

Assignment Help Basic Statistics
Reference no: EM1321420

Q1) Assume average puppy weighs 10 pounds. Sample of 10 puppies yields sample  mean of 13.2 pounds and sample standard deviation of 2.78 pounds. Suppose population standard deviation is unknown. You wish to test whether sample mean varies from population mean of 10 pounds at 5 percent level of significance using two-tailed test. Find out whether or not null hypothesis should be rejected

a) Reject the null hypothesis.

b) Fail to reject the null hypothesis.               

Q2) When calculating correlation coefficient, what does a value of -2 indicate?

a) Strong negative correlation

b) Weak negative correlation

c) Strong positive correlation

d) Weak positive correlation

e) Error in the calculation

Reference no: EM1321420

Questions Cloud

What would happen in the tempe pizza marketplace if pizza : Illustrate what would happen in the Tempe pizza marketplace if pizza also sub sandwiches are substitutes also there occurred
Computing bivariate correlation coefficient : True or False? Bivariate correlation coefficient always has same sign as b 1 in Y = b 0 + b 1 X.
Simple linear regression equation : Simple linear regression equation
Write a matrix multiplication program : Write a C++, matrix multiplication program which you can instrument to monitor and measure execution time as a function of problem size. Make sure it works in Microsoft Visual Studio.
Explaining strong negative correlation : When calculating correlation coefficient, what does a value of -2 indicate? Strong negative correlation, Weak negative correlation.
Five step hypothesis on using non-parametric hypothesis : Perform the five-step hypothesis test on the data. - LORA - this is the portion I am responsible for based on using the nonparametric hypothesis testing.
Considering a single programmed operating system : Considering a single programmed operating system, what is the minimal total time required to complete executions of the two processes? You should explain your answer with a diagram.
Find the sample size in order to obtain p estimate : How large sample should be selected in order to obtain p estimate with a bound of 0.08 on the error of estimation.
Explaining level of significance in two-tailed test : Compute test statistic for sample data that you would use to test whether sample mean varies from population mean of 10 pounds at a 5 percent level of significance in two-tailed test.

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Least squares trend equation

Use the trend equation to calculate the points for 2003 and 2005. Plot them on the graph and draw the regression line.

  Inverse probability depend on normal distribution

Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer's expense?

  Descriptive statistics for the data

Here are fifty observations on the weight of tea bags. Calculate the Standard Deviation and Variance.

  Confidence interval for multiple comparisons

Use a 95% confidence interval for multiple comparisons. Show your calculation by hand between Monday and Tuesday. Match your answer with Minitab output. Attach Minitab output.

  Proportions for the two commercials

If the computed value for this problem is +2.33, and the level of significance is 0.05, can we conclude that the recall proportions for the two commercials are same?

  Assess the standard error of proportion

Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.

  Mean number of letters

Find out the mean number of letters that will arrive in two days.

  Creating the decision tree

Create the corresponding decision tree and make recommendations.

  Finding numerical probability that event will happen

What kind of probability uses sample spaces to find out numerical probability that event will happen?

  Kruskal wallis non-parametric anova

Describe what the researcher must do if one of the requirements is not met and give illustrations.

  Decision making using the transportation method

Decision making using the Transportation method.

  Average value of sales

The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.

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