Questions 1-7: A quality control engineer plans a study to assess the impact of storage on the sweetness of a new cola. Ten trained tasters are available to rate the cola’s sweetness on a 10-point scale before and after storage, so that each taster’s judgement of the change of sweetness can be assessed. Industry records indicate that sweetness change scores vary from taster to taster according to Normal distribution with mean μ and standard deviation about σ=1. Suppose the sample mean of the sweetness change from the ten tasters is \( \bar{x}=-0.5. \)(Note that negative means sweetness loss, and positive means sweetness gain.)To see if the taste test gives reason to think that the cola does change sweetness, the engineer will test

(continued from Questions 5 and 6)From the above Minitab output, what is the probability that takes value that leads to reject H0 if the true mean is µ=119.5? (Note that this probability is the power.)

Suppose that a manager is interested in estimating the average amount of money customers spend in her store. After sampling 36 transactions at random, she found that the average amount spent was $37.85. She then computed a 99% confidence interval to be between $32.89 and $42.81.Which statement gives a valid interpretation of the interval?

Give the plus four 95% confidence interval for the proportion of heterozygotes in the population of red-eyed fruit flies studied.

How many red-eyed fruit flies should be used in this experiment to obtain a 95% confidence interval with a margin of error no more than 3%? Use 20% as a conservative (worst-case) estimate of the percent of heterozygotes in the population.

The P-value for the test is

A nurse is preparing to inspect a client’s conjunctiva during a focused  assessment of the eyes. Which action should the nurse take?

During a physical assessment, the nurse inspects a client’s hands and notes that the fingertips appear enlarged and the angle between the nail base and the skin measures 180 degrees. Which condition should the nurse document?

A 3.82-g sample of magnesium nitride is reacted with 7.73 g of water: Mg3N2 + 3H2O → 2NH3 + 3MgO The yield of MgO is 3.60 g. What is the percent yield in the reaction?

When the following equation is balanced, the coefficients are ________. C 8H 18 + O 2 → CO 2 + H 2O