WHEN CAN WE SAY THAT THE UNDERLINE VALUE IS PARAMETER OR STATISTIC? WHAT IS THE DIFFERENCE BETWEEN THE TWO

2. Determine whether the underlined value is a parameter or a statistic. Justify you answer

In a national survey on substance abuse, 10% of respondents aged 12 to 17 reported using illicit drugs within the past month. ._________________

Ty Cobb is one of major league baseball's greatest hitters of all time, with a career batting average of 0.366. ._________________

A study of 6076 adults in public rest rooms (in Atlanta, Chicago, New York City, and San Francisco) found that 23% did not wash their hands before exiting. ._________________

Interview of 100 adults 18 years of age or older, conducted nationwide, found that 44% could state the minimum age required for the office of US president. ._________________

HOW TO IDENTIFY THESE HYPOTHESIS TESTING

Instructions: Follow the NINE(9) Steps of Hypothesis Testing

A nutrition store in the mall is selling "Memory Booster," which is a concoction of herbs and minerals that is intended to improve memory performance, but there is no good reason to think it couldn't possibly do the opposite. To test the effectiveness of the herbal mix, a researcher obtains a sample of 26 participants and asks each person to take the suggested dosage each day for 4 weeks. At the end of the 4-week period, each individual takes a standardized memory test. In the general population, the standardized test is known to have a mean of = 50. (20 Points)

VariableNMeanStDevSE Mean 99.5% CITest StatP

Herbal Mix2652.4213.202.59(44.45,60.39)0.940.358

Is there any evidence that leadership style (as measured by the amount of controlling behavior) differs between principals in urban and rural areas in the Philippines? Data are provided in Table 1 below. (15 Points)

If you have made an error, would it be a Type I or a Type II error? Explain your answer.(5 Points)

A survey is conducted on attitudes towards drinking. A random sample of eight married couples is selected, and the husbands and wives respond to an attitude-toward-drinking scale. (20 Points)The scores are as follows:

NMeanStDevSE Mean

a.814.634.071.4

b.813.382.720.96

Estimate for difference:1.25;95% lower bound for difference: -1.83

T-Value = 0.72 P-Value = 0.242 DF = 12