And that's gonna be the 10 statistics and the P value here. The z test for proportions uses a normal distribution. So if we compute this one 22 10, 0.7 93 equal to the 0.15 86. Now we can use the table to find this probability and the -1.4 and one the corresponding probability it will go to 0.0793. Instead, I have to attend to do times this one can be written that is Aziz smaller than -1.41 because of the symmetry. I don't understand the temple and bring here and it's the negative the skull with the proper put it on the left tail. So let me complete the Z table and I put it on the right here. Now to find this value, I need to bring up the Z table. And for the two tailed test, the people who will be the dude times probability undersea created than 1.1114. You know, this stance will be the hotel desk for this continental here, that would be the true town danced. And the next time we need to compute the beaver, the p value. The venue by 50 taking the square root divided by the answer. Now, if we compute it, we have there's a bunch of times open eight. I was regarded as a 0.22 times one minus seven point to the other end. So we have the which is a 0.28 B equals 0.2. The formula will be the Z equal to the p heart minus B. And the next time we need to fight the statistics. So here from this week and find a point as it may be hard to go to the X. here Equal to the 14 that indicated they go on Friday more often than on the days. Want to test the new hypothesis B will be equal to the 72 versus then continue to hypothesis B will not equal to the seven to In this question here were given the symbol and equal to the 50 were given the the heart, it will equal ju The 14 indicated. Here we are going to discuss about the hypothesis testing here. Now let me bring up your question here in the question. And I'm here to help you answer your question. Identify the test statistic, and p-value from the calculator output pUt rounding to three decimal places:
Use T1-83,T1-83 Plus or Tl84 calculator to test whether the true proportion of weekday movie-goers who most frequently on Fridays is different from 20%. For this test: Ho : p = 0.2 Ha P / 0.2, which Is & two-tailed test one-proportlon hypothesis test at the 5% significance level to test whether the true proportion Of weekday movle-goers who g0 most frequently on Fridays different from 20%. If cell I3:I5 is red, reject the null hypothesis.3 days, 21 hours ago An economist wondered if people who g0 to the movies on weekdays g0 more or ess Olten On 'Fridays than any other dg% She figured that if it were truly random 20 % of these movie-goers would go on Fridays: She randomly sampled 50 people who go t0 movies 0n weekdays and asked them on which day they atterid movles most frequently: Of those sampled L4 Indicated that they go on Fridays more often than other days.
If cell I3:I5 is green, you cannot reject the null hypothesis (accept the null hypothesis) Click on the tab labeled "Two Proportions."
This computation assumes that the number of successes and sample measurements is large enough (normal approximation is used).In addition the Agresti-Coull approach is used to compute better intervals.