Hypothesis testing using z test for proportion

Assignment Help Basic Statistics
Reference no: EM13109211

Professor Jennings claims that 35% of the students at Flora College work while attending school. Dean Renata thinks that the professor has underestimated the number of students with part time or full time jobs. A random sample of 81 students shows that 39 have jobs. Do the data indicate that more than 35% of the students have jobs? (Use a 5% level of significance.)

Reference no: EM13109211

Questions Cloud

How much a company pay to keep specially skilled worker : How much should a company pay to keep a specially-skilled worker? Why? How would you determine the amount to pay to keep such a worker?
Compute the enthalpy change for the dissolution : Compute the enthalpy change for the dissolution of ammonium nitrate express your answers  in units of kJ/mol.
Increase in admissions has increased revenue : Increase in admissions has increased revenue an average of $300,000 monthly. With expenses factored in there is a profit for Valley brook of approximately $100,000 monthly.
Find probability mean annual salary is between a range : A random sample of size 70 is drawn from population. Determine probability that mean annual salary is between $32,000 and $32,500?
Hypothesis testing using z test for proportion : Professor Jennings claims that 35% of the students at Flora College work while attending school. Dean Renata thinks that the professor has underestimated the number of students with part time or full time jobs. A random sample of 81 students shows..
Baseline characteristics between treatment groups : Are there any statistically significant differences in baseline characteristics between treatment groups? Justify your answer. Write the hypotheses and the test statistic used to compare ages between groups. (No calculations - just H 0 , H 1 and for..
Determine three terms explain experimental design : Neither subjects nor researcher knew who was assigned to what. Determine three terms explain the experimental design?
Define immunofluorescence and western blotting techniques : Describe the major difference between Immunofluorescence and Western blotting techniques.
What kind of experiments would help narrow : Create a hypothesis and suggest three-to-four possible experiments to narrow down the identification of nutrient agar. Okay, so there are several genera of microbes that might share the same morphology. What kind of experiments would help narrow t..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Confidence interval for simple random sample

A simple random sample of 50 items from a population with σ 6 resulted in a sample mean of 32.

  Independent t-test with equal variances not assumed

Compute a 95% confidence interval for the mean difference in the percentage of bone loss between two groups.

  Probability for brook trouts length

The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length:

  Working with normal distribution and probability

The average hourly wage of workers in a fast food restaurant is $5.85 with a standard deviation of $0.35. Assume that the distribution is normal.

  Predicted values of response variable

On a graph, the vertical difference between the observed and predicted values of the response variable for an individual is called the

  Perspective to assess personality

Briefly identify and contrast the methods used by the psychoanalytic perspective, the humanistic perspective, and the trait perspective to assess personality.

  Real-world example of an assignment model

Explain the assignment model and how it is similar to a transportation problem. Give a real-world example of an assignment model to describe what is transported where.

  One sample t statistic-p value test

The one-sample  t  statistic has the value  t  = -1.68. What do we know about the  P -value of this test?

  Sample size index and parameter for distribution

What probability distribution does n1 alone have? Specify the values of the sample size index and parameter for that distribution.

  Simple and conditional probabilities

Since she is allowed to reserve one time if her first serve is out what should her serving strategy be?

  Test whether there is more variation using variance test

At the .01 significance level, can we conclude that there is more variation?

  Success probability of o-ring

What was the success probability of each O-ring?

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