In a managerial report,Use descriptive statistics to summarize the data from Triple T’s study. Based on descriptive statistics, what are your preliminary conclusions about whether the time spent by visitors to the Triple T website differs by background color or font? What are yourpreliminary conclusions about whether time spent by visitors to the Triple T website differs by different combinations of background color and font?Explain whether Triple T has used an observational study or a controlled experiment.Use the data from Triple T’s study to test the hypothesis that the time spent by visitors to the Triple T website is equal for the three background colors. Include both factors and their interaction in the ANOVA model, and use a=.05.Use the data from Triple T’s study to test the hypothesis that the time spent by visitors to the Triple T website is equal for the three fonts. Include both factors and their interaction in the ANOVA model, and use a=.05.Use the data from Triple T’s study to test the hypothesis that time spent by visitors to the Triple T website is equal for the nine combinations of background color and font. Include both factors and their interaction in the ANOVA model, and use a=.05.Discuss whether the results of your analysis of the data provide evidence that the time spent by visitors to the Triple T website differs by background color, font, or combination of background color and font. What is your recommendation?Step 3: Discuss:What recommendations does your ANOVA results support? Use findings from your managerial report to support your recommendations. Be sure to include why you support certain decisions over others. What surprising findings did you come up with during your analysis?

1) Find the critical value zc that corresponds to a 95% confidence level. 2) Construct and Interpret Confidence Intervals for the Population Mean: A random sample of 40 students has a test score with x = 81.5 and s = 10.2. Construct the confidence interval for the population mean, μ if c = 0.90. 3) The standard IQ test has a mean of 101 and a standard deviation of 16. We want to be 98% certain that we are within 4 IQ points of the true mean. Determine the required sample size. 4) In order to efficiently bid on a contract, a contractor wants to be 95% confident that his error is less than two hours in estimating the average time it takes to install tile flooring. Previous contracts indicate that the standard deviation is 4.5 hours. How large a sample must be selected? 5) Find the critical value, tc for c = 0.99 and n = 10. 6) When 435 college students were surveyed,120 said they own their car. Find a point estimate for p, the population proportion of students who own their cars. 7) A survey of 400 non-fatal accidents showed that 189 involved the use of a cell phone. Find a point estimate for p, the population proportion of non-fatal accidents that involved the use of a cell phone. 8) A survey of 250 homeless persons showed that 17 were veterans. Find a point estimate p, for the population proportion of homeless persons who are veterans. 9) Construct a 95% confidence interval for the population standard deviation σ of a random sample of 15 men who have a mean weight of 165.2 pounds with a standard deviation of 13.5 pounds. Assume the population is normally distributed. 10) A student randomly selects 10 CDs at a store. The mean is $13.75 with a standard deviation of $1.50. Construct a 95% confidence interval for the population standard deviation, σ. 11) Determine the sampling error if the grade point averages for 10 randomly selected students from a class of 125 students has a mean of x = 1.8. Assume the grade point average of the 125 students has a mean of μ = 2.4. 12) A random sample of 120 students has a test score average with a standard deviation of 9.2. Find the margin of error if c = 0.98

What is the LCD of the denominators in the equation shown below?A. 3B. 5C. 15D. 225