The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65−74 years: n = 111, x = 12.4, and s = 6.69. Does this data indicate that average daily zinc intake in the population of all males age 65−74 falls below the recommended allowance? (Use ? = 0.05.) State the appropriate null and alternative hypotheses. H0: ? = 15 Ha: ? > 15H0: ? = 15 Ha: ? < 15    H0: ? = 15 Ha: ? ≤ 15H0: ? = 15 Ha: ? ≠ 15 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z  =    P-value  =    State the conclusion in the problem context. Do not reject the null hypothesis. There is sufficient evidence that average daily zinc intake falls below 15 mg/day.Reject the null hypothesis. There is sufficient evidence that average daily zinc intake falls below 15 mg/day.    Do not reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day.Reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day.

Listed below are the overhead widths​ (in cm) of seals measured from photographs and the weights of the seals​ (in kg). The purpose of the study was to determine if weights of seals could be determined from overhead photographs. Is there sufficient evidence to conclude that there is a correlation between overhead widths and the weights of the​ seals? Use a significance level of α=0.05.   a.  Determine rs. rs= ​(Round to three decimal places as​ needed.)   b. Determine the critical values.   Critical values are ​(Round to three decimal places as needed. Use a comma to separate answers as​ needed.)

The level of calcium in the blood of healthy young adults follows a normal distribution with mean u = 10 milligrams per deciliter and standard deviation s = 0.4.  A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care.  The sample mean of these 100 measurements is  X = 9.8.  Is this evidence that the mean calcium level in the population from which these women come is less than 10?  To answer this question, we perform the following hypothesis test: H0: u = 10, Ha: u < 10. What is the test statistic? (use two decimal places in your answer) What is the p-value equal to? At the 10% significance level, do you accept or reject the null hypothesis? Answer ACCEPT or REJECT t the 5% significance level, do you accept or reject the null hypothesis? Answer ACCEPT or REJECT

Determine the point of estimate of the population mean and margin of error from the given information:        Lower Bound: 5        Upper Bound: 23   Question 4 options:   x¯= 15   E = 10   x¯= 12   E = 9   x¯= 13.5   E = 9   x¯= 14   E = 9

Listed below are pulse rates​ (beats per​ minute) from samples of adult males and females. Does there appear to be a​difference? Find the coefficient of variation for each of the two​ samples; then compare the variation. A. The coefficient of variation for the male pulse rates iS ​(Type an integer or decimal rounded to one decimal place as​ needed.)   B. The coefficient of variation for the female pulse rates is ​(Type an integer or decimal rounded to one decimal place as​ needed.)

4. Answer question 2

The NCHS reported that the mean total cholesterol level was 203 for all adults in 2003. Patients (n=15) were enrolled in a 6-week study to test the efficacy of a new drug. Use the five-step hypothesis testing procedure to determine if the new drug was effective in reducing the cholesterol levels compared to the historical mean.  At the end of 6 weeks: ◦n = 15 ◦X ̅ = 195.9 ◦s = 28.7