Hypothesis testing-consumption of saturated fats

Reference no: EM13109831

Consumption of Saturated Fat: A nutritionist claims that the proportion of females who consume too much saturated fat is lower than the proportion of males who consume too much saturated fat. In interviews with 513 randomly selected females, she determines that 300 consume too much saturated fat. In interviews with 564 randomly selected males, she determines that 391 consume too much saturated fat.

a) Determine whether a lower proportion of females than males consume too much saturated fat at the 0.05 significance level. You must state the hypotheses, determine the test statistic and either the P-value(s) or critical value(s). Finally, you must clearly state your conclusion. Round all answers to two decimal places.

b) Construct a 95% confidence interval for the difference between the two population proportions,

c) Does your confidence interval lead you to the same conclusion as your answer to part (a)? Explain.

Reference no: EM13109831

Questions Cloud

Difference in two sample means : Which of the following conditions must be met to conduct a test for the difference in two sample means? Suppose we test the difference between two proportions at the 0.05 level of significance. If the computed z is -1.07, what is our decision?

Compute karl pearson-s co-efficient of skewnes : The data given shows daily sales at the petrol station. Compute Karl Pearson's co -efficient of skewness. Quantity sold (in litres) and No. of days. are given.

Analyze sample data for time spent going to parties : National data show that, on average, college freshman spend 7.5 hours a week going to parties. President DeRosa doesn't believe that these figures apply at his school; he thinks freshman at his school party less.

Case study - on time technology products : On-Time Technology Products recognizes that they should do more to connect with customers after a sale. Assume you work in the On-Time Technology Products call center in Dayton, Ohio.

Hypothesis testing-consumption of saturated fats : Consumption of Saturated Fat: A nutritionist claims that the proportion of females who consume too much saturated fat is lower than the proportion of males who consume too much saturated fat.

Data set including independent and dependent variables : Create and describe a data set including independent and dependent variables (be creative) and a table of the data. Explain how this would best be graphed to accurately present the results of the research (type of graph, axes, and scale limits - m..

Null hypothese for goodness of fit for colors of proposed : Three colors have been proposed for a product: blue, green, yellow. The null hypothesis for a goodness-of-fit test would be.

Why does the the frequency of action potentials increase : Why does the the frequency of action potentials increase when the stimulus intensity increases?

Compute insurance company-s expected profit : Assume that probanility that dimond will be stolen is .005, and let x denote insurance company's profit. Compute insurance company's expected profit.

User Account

All Pages