What is the appropriate alternative hypothesis if a certain senior high school, a study found that 972 out that 1,100 Grade 12 students use smartphones. Using α = 0.10 level, is there enough evidence to conclude that the percentage of students who are using smartphones is different from 25%? Ha: p > 0.25Ha: p < 0.25Ha: p =0.25Ha: p ≠ 0.2

Kids with phones: A marketing manager for a phone company claims that the percentage of children aged 8-12 who have phones differs from 60%. In a survey of 824 children aged 8-12 by a national consumers group, 453 of them had phones. Can you conclude that the manager's claim is true? Use the =α0.05 level of significance and the P-value method with the TI-84 Plus calculator.Part 1 of 5State the appropriate null and alternate hypotheses.:H0 =p0.60:H1 ≠p0.60This hypothesis test is a ▼two-tailed test.Part: 1 / 51 of 5 Parts CompletePart 2 of 5Compute the value of the test statistic. Round the answer to at least two decimal places.=z

According to a Pew Research Center, in May 2011, 35% of all American adults had a smartphone (one which the user can use to read email and surf the Internet). A communications professor at a university believes this percentage is higher among community college students.She selects 300 community college students at random and finds that 120 of them have a smartphone. In testing the hypotheses H0, P = 0.35, versus Ha, p > 0.35, she calculates the test statistic as Z = 1.82.Use the normal table to identify the appropriate p-value for this Z score.Click here to access the normal table.Given these results, which of the following is an appropriate conclusion? There is enough evidence to show that more than 35% of community college students own a smartphone (p-value = 0.034). There is enough evidence to show that more than 35% of community college students own a smartphone (p-value = 0.068). There is not enough evidence to show that more than 35% of community college students own a smartphone (p-value = 0.966). There is not enough evidence to show that more than 35% of community college students own a smartphone (p-value = 0.034).

If a school administrator claims that less than 50% of the students are dissatisfied with the food served in the school canteen. The claim used a sample data obtained from a survey of 500 students of the school wherein 54% indicated their dissatisfaction with the food served in the school canteen. Which of the following is the appropriate alternative hypothesis?p= 0.50p < 0.50p > 0.50p ≠ 0.50

Suppose we have a Proportion Test, testing the % of iPhone users in a class.The null hypothesis H0 is: p = 0.5.We take a sample of 10, and the observed value is 7.What is the test statistic?

Cell phones are already enhancing some classroom experiences. Which type of evidence does the author use to support this claim? a. Anecdotal evidence b. No evidence c. Facts and statistics d. Expert opinion