Hypothesis testing-z test for proportion

Assignment Help Basic Statistics
Reference no: EM13112149

A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at most 65%. If 196 out of a random sample of 270 college students expressed an intent to vote, can the aide's estimate be rejected at the 0.1 level of significance?

What is the null hypothesis?

What is the alternative hypothesis?

What is the type of test statistic? (Z, t, F, chi squared)

What is the value of the test statistic? (Round to at least three decimal places)

What is the critical value at the 0.1 level of significance? (Round to at least three decimal places)

Can you reject the aide's estimate that the proportion of college students who intend to vote is at most 65%?

Reference no: EM13112149

Questions Cloud

Locate value of population mean in histogram : For the following population of N=10 scores 14,6,8,3,9,12,1,6. Draw the histogram showing population distribution. Locate value of population mean in your sketch and make estimate of standard deviation.
Calculating mass of the product : For each reaction, calculate the mass (in grams) of the product formed when 10.1g of the underlined reactant completely reacts. Assume that there is more than enough of the other reactant.
Five step hypothesis test for mortgage rate : A recent article in the Wall Street Journal reported that the 30-year mortgage rate is now less than 6 percent. A sample of eight small banks in the Midwest revealed the following 30- year rates (in percent):
Significance for the mean lifetime of light bulbs : What is the critical value at .1 significance? Can we conclude the mean lifetime of light bulbs made by this manufacturer differs from 48 months?
Hypothesis testing-z test for proportion : A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at most 65%.
Find the change in internal energy for system : The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130J of heat. As it expands, it does 76kJ of work. What is the change in internal energy for the system?
Why does the dye wash out of the vegetative cells : even though endospore may be observed as a result of routine Simple or Gram Staining , it is still necessary to perform the Schaeffer-Fulton stain, Why ?
Null hypothesis-two tailed test : A manufacturer claims that the mean lifetime, mu, of its light bulbs is 44 months. The standard deviation of these lifetimes is 7 months. Seventy bulbs are selected at random, and their mean lifetime is found to be 43 months.
Calculate the frequency of em radiation : What is the amount of energy packaged in a photon with a wavelength of 310 nm. Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability related to sample sizes

A scientist wants a confidence interval of 90% and a margin of error of +-2 for a mean of a Normal population with σ =10. What size samples should she take?

  Trend analysis of failure probability

Perform the trend analysis of Pf with incrementally increasing number of the simulation cycles, and calculate the statistical uncertainty in the estimate expressed as  the coefficient of variation.

  Define illusionary correlations

What is meant by illusionary correlations? Why is it so difficult for individuals to disprove their beliefs in correlations that are actually false?

  Determining likelihood of accepting a defective lot

Determine the likelihood of accepting a lot which is 1% defective?

  Calculating the test statistic of a printing plant

The superintendent of a printing plant has selected a random sample of 100 rolls of paper from a large shipment. The average length of the sample rolls is 416 feet, with a variance of 2704 feet.

  Probability calculations-normal distribution

SmartPeople is an organization that only admits people with IQ's in the top 98 percentile. What IQ score would a person need to be a member of SmartPeople?

  Statistical analysis of baseball

Suppose a well-known baseball player states that, at this stage of his career, he is a "300 hitter" or better. That is, he claims that he gets a hit in at least 30% of his at-bats. Over the next month of the baseball season, this player has 105 at..

  Show the scatter plot for the variables

Correlation between the two variables based on scatter plot - Show the scatter plot for the variables.

  Probability of applicants are failing the test

Would it be sensible to conclude that more than 10% of applicants are now failing the test?

  Classes are uniformly distributed

A statistics professor planed her classes so carefully that the lengths of her classes are uniformly distributed between 45 and 55 minutes. Find the probability that a given class period runs greater than 50.25 minutes.

  Construct a multiple regression model

So construct a multiple regression model for predicting the crime rate based upon various explanatory variables unemployment rate, median income, education level.

  Binomial approximation to normal finding the normal model

Utlizing binomial approximation to normal finding the normal model. A grower claims that only 13 percent of the strawberries he grows are unsatisfactory.

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