User Account

All Pages

Value of test statistic-decision rule

Assignment Help Basic Statistics
Reference no: EM13110405

The production manager at Bellevue Steel, a manufacturer of wheelchairs, wants to compare the number of defective wheelchairs produced on the day shift with the number on the afternoon shift. A sample of the production from 6 day shifts and 8 afternoon shifts revealed the following number of defects. Assume this is a two sample "Unknown Variances, Assumed Equal". The level of significance is 0.05. The standard deviation for Day is 1.4142 and the standard deviation for Afternoon is 2.2678.

Day 5 8 7 6 9 7

Afternoon 8 10 7 11 9 12 14 9

1. Set up the null and alternative hypothesis.

2. Calculate the value of the test statistic.

Note: if you use manual or Megastat, select Hypothesis Test: Independent Groups (t test, pooled variance)

What is the value of the test statistic?

3. What is the decision rule (DR)?

Reject Ho if (complete the DR in next box)

4. What is your decision regarding Ho?

Accept or Reject Ho?

Reference no: EM13110405

Questions Cloud

Long run equilibrium : Explain graphically and verbally what happens to the market in the short run and in the new long run equilibrium if factor prices and demand are assumed to remain the same as before.
What are the two chemical modes of enzyme catalysis : Chymotrypsin and trypsin cleave peptide bonds by virtually the same mechanism. Why does chymotrypsin cleave near residues like tyrosine, but trypsin does not?
Testing medication reaction : A researcher is testing the effect of a new cold and flu medication on reaction time. A sample of n = 9 students is obtained and each student is given the normal dose of the medicine.
Compare internal vs external recruiting : Compare internal vs external recruiting. When would you want to use each option? what are some advantages and disadvantages of each?
Value of test statistic-decision rule : The production manager at Bellevue Steel, a manufacturer of wheelchairs, wants to compare the number of defective wheelchairs produced on the day shift with the number on the afternoon shift.
Which is false about enzyme catalysis : Specifically, what is meant by the steady-state assumption in the derivation of the Michaelis-Menton equation?
Estimate the safety stock : Chicago's Hard Rock Hotel distributes a mean of 1000 bath towels per day to guests at the pool and in their rooms. This demand is normally distributed with a standard deviation of 100 towels per day, based on occupancy.
Top countries that lead export and import of merchandise : The WTO's International Trade Statistics is an annual report that provides comprehensive, comparable, and updated statistics on trade in merchandise and commercial services.
Determine the confidence interval for true mean : Sample of 81 houses was studied and found to have the mean of 1858 KWH. Determine the 95% confidence interval for true mean.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Distribution interval or a bootstrap percentile interval

An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval

  Expected value of frequency

You're a risk manager of ABC company and you are reevaulating your insurance contract. Your insurer has informed you that the expected value of frequency per month for ABC is 2.43.

  Testing null hypothesis and interpreting the p-value

If you test the null hypothesis at the 0.01 level of significance, is there evidence that the new process has reduced turnaround time? Interpret the meaning of the p-value in this problem.

  Normal distribution of diameters of grapefruits

The diameters of grapefruits in certain orchard are normally distributed with mean of 6.95 inches and a standard deviation of 0.75 inches. Show all work.

  The payoff table for these two decisions

Evaluate the result in part c with the decision using the expected value approach.

  Distribution is normally distributed using grading on curve

Under new grading scale, how many students will have A's, B's, C's, D's and F's? Do you beleive the instructor must grade on a curve? Explain why or why not?

  Estimating probability on normal and binomial distribution

If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.

  Mcq of multivariate statistics

Regression model results can be erroneous if multicollinearity is an issue. What causes multicollinearity? If the intercept is statistically significant, what does this tell you?

  Critical value for the f-ratio

For an independent-measures ANOVA comparing three treatments with a sample of n = 5 in each treatment, what is the critical value for the F-ratio using a = .05?

  Finding mean-variance by creating probability distribution

Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.

  Time required to assemble a product

The times required to assemble a product are normally distributed with a mean of 47.5 minutes and a standard deviation equal to 8.5 minutes. What percent of the assembly workers require: (do not include % symbol)

  Estimate z-score and raw score using normal distribution

Compute the score based on their appropriate class means and standard deviations:

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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