John claims that more than 25% of Wenatchee population prefer Taco Bell rather than McDonalds. To support his claim, he selected a sample of 150 people in Wenatchee and observed that 73 prefer Taco Bell. At (alpha symbol)=0.05, is there enough evidence to support his claim?

Vita Pills were advertised as having 751 mg of vitamin C per pill.  A marketing firm hypothesizes that the amount of vitamin C is more than what is advertised.  What can be concluded with α = 0.10.  The vitamin C content per pill from a sample of pills is as follows:701, 761, 716, 721, 751, 721, 711, 741.     A) What is the appropriate test statistic?   B) Population and sample?   C) Obtain/compute the appropriate values to make a decision about H0. Critical value= Tests statistic=    D)Compute the corresponding effect size(s) and indicate magnitude(s).   d= r2=    E)Make an interpretation based on the results. The amount of vitamin C in Vita Pills is significantly more than the advertised claim. The amount of vitamin C in Vita Pills is significantly less than the advertised claim.     The amount of vitamin C in Vita Pills is not significantly different than the advertised claim  ---Select--- marketing firm advertisement Vita Pills sample of pills vitamin C ---Select--- marketing…

please do the full problem as it is part of just one!!! please and thx.

The average amount of time it takes for couples to further communicate with each other after their first date has ended is 2.35 days. Is this average different for blind dates? A researcher interviewed 70 couples who had recently been on blind dates and found that they averaged 2.5 days to communicate with each other after the date was over. Their standard devlation was 0.655 days. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Select an answerv H: ?vSelect an answerv c. The test statistic ?v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?v a f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly different from 2.35 at a = 0.10, so there is statistically…

A study is to be made to estimate the proportion of residents of a certain city and its suburbs who favor the construction of a nuclear power plant near the city. How large a sample is needed if one wishes to be at least 90% confident that the estimate is within 0.03 of the true proportion of residents who favor the construction of the nuclear power plant?

According to Time Magazine (June 11, 2012), 33% of all cars sold in the United States are SUV's. Suppose a random sample of 500 recently sold cars shows that 145 are SUV's. is there enough evidence at the 1% alpha level, to conclude that the number of SUV's recently sold is less than 33%? 1. Develop a plan. State the type of test you will do, and why you will do that specific test. 2. State your steps List your given information: List your H, and H, H Write H, in words: H₂ Write H, in words Check your conditions 3. Document all steps used to find your answer Compute all of the values you will use with appropriate formulas or using appropriate technology 4. Determine whether or not to reject H and write a concluding statement in context of the problem.

Is there an association between daily screen time and exercise habits in high school students? Mia selects a random sample of 123 high school students and categorizes them into 1 of 3 categories of screen time and whether they exercise. She would like to determine if there is convincing evidence of an association. Let  = 0.05. What are the hypotheses for this test? H0: There is an association between daily screen time and exercise habits in high school students.Ha: There is no association between daily screen time and exercise habits in high school students.H0: There is no association between daily screen time and exercise habits in high school students.Ha: There is an association between daily screen time and exercise habits in high school students.H0: There is no difference in the distribution of daily screen time and exercise habits in high school students.Ha: There is a difference in the distribution of daily screen time and exercise habits in high school students.H0: There is a…

The school registrar estimates that the dropout rate of freshmen high schools in Valenzuela is 20%. Last year, 90 freshmen from a random sample of 500 Valenzuela freshmen high school withdrew. At 0.01, is there enough evidence to reject the registrar's claim?

You conduct a one-factor ANOVA with 6 groups and 5 subjecis in each group (a balanced design) and obtain F = 2.48. Use Excel to find the requested values (report accurate Lo 4 decimal places). dfiuiwmn = dfanhin = P=