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An economist claims that the proportion of people who plan to purchase a fully electric vehicle...

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%.)

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Answer #1

Solution:

This is a right tailed,

P- value = 0.026

The p-value is p = 0.026, and since p = 0.026 < 0.05, it is concluded that the null hypothesis is rejected.

There is sufficient evidence to claim that the proportion of people who plan to purchase a fully electric vehicle as their next car is greater than 65%. at 0.05 level of significance.

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