Question

Asked Aug 30, 2019

15 views

An economist claims that the proportion of people who plan to purchase a fully electric vehicle as their next car is greater than 65%.

To test this claim, a random sample of 750 people are asked if they plan to purchase a fully electric vehicle as their next car Of these 750 people, 513 indicate that they do plan to purchase an electric vehicle.

The following is the setup for this hypothesis test:

**H0:p=0.65**

**Ha:p<0.65**

In this example, the p-value was determined to be 0.026.

Come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%.)

Select the correct answer below:

A. The decision is to reject the Null Hypothesis.

The conclusion is that there is enough evidence to support the claim.

B. The decision is to fail to reject the Null Hypothesis.

The conclusion is that there is not enough evidence to support the claim.

Step 1

Decision rule:

If the p-value is less than or equal to level of significance, then reject the null hypothesis. Otherwise do not r...

Tagged in

Q: Past studies have indicated that 85.6% of all enrolled college students in the U.S are undergraduate...

A: The provided information are:Sample size (n) = 500Hypothesised proportion (po)=0.856Sample proportio...

Q: Select the statistic test that best fits each description. Study examining how much of the variation...

A: Regression:Regression analysis explains whether two variables are related or not and correlation exp...

Q: A person with a cough is a persona non grata on airplanes, elevators, or at the theater. In theaters...

A: Given that in any large audience you will hear that 15 coughs per minute. r is the number of coughs ...

Q: directions construct a confidence interval of the population proportion at the given level of confid...

A: Confidence interval:It is given that n = 500 and x = 120.The (1−α)% confidence interval for proporti...

Q: Suppose x has a distribution with μ = 60 and σ = 17. (a) If random samples of size n = 16 are select...

A: Note:Hi there! Thank you for posting the question. The Part (b) of your question asks about the “x d...

Q: a. Which of the six correlations above are statistically significant (i) if you test each correlatio...

A: We have been given alpha = 0.05 which implies that the probability of inferring that there is a cor...

Q: A computer system uses passwords that contain exactly 6 characters, and each character is 1 of the 2...

A: We have to make a password of 6 digits whose digits can be 26 lowercase alphabets, 26 uppercase alp...

Q: Directions: Draw the normal curve and shade the specific region show formulas A random same of 2...

A: Confidence interval:The (1-α) % confidence interval for proportion p is given by,

Q: Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy adu...

A: The provided information are: