Discussion:

**In one's culture, the elderly and those with severe handicaps are put to death. it will appear that this culture does not recognize human dignity as a value?

** Copyright law makes it illegal to copy computer programs. Yet sometimes students wants or need a program that is too expensive for them to buy. In such cases, is it morally acceptable for students to copy a friend software?

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 9 randomly selected students are 60, 61, 70, 65, 65, 60, 69, and 70.

x-bar =

Margin of error at 99% confidence level =

99% confidence interval =

10. A survey of 145 randomly selected students at one college showed that only 87 checked their campus email account on a regular basis. Construct and interpret a 90% confidence interval for the percentage of students at that college who do not check their email account on a regular basis. (1pt)

Point Estimate: ______

Margin of Error: ________

Confidence Interval:_________________

Interpretation: ____

7. Of 380 randomly selected medical students, 21 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.

A) 0.0251 < p < 0.0854

B) 0.0323 < p < 0.0782

C) 0.0280 < p < 0.0826

D) 0.0360 < p < 0.0745

About 42.3% of Californians speak a language other than English at home. Using your class as the sample, conduct a hypothesis test to determine if the percent of students at school that speak a language other than English at home is different from 42.3%. 23 out of 34 students in the sample speak a language other than English at home

The administration of a local college states that the average age of its students is 28 years. Records of a random sample of 100 students give a mean age of 31 years. Using a population standard deviation of 10 years, test at the 5% significance level whether there is evidence that the administration’s statement is incorrect.

State clearly your null and alternative hypotheses.

In a recent study, among recently-graduated university students of the sample, only 4% of them wrote with their left hand. Yet, among grade 1 elementary-school students from the same sample, a full 20% of them wrote with their left hand. What is wrong with the conclusion from these data that writing with the left hand is bad for university success?

graduate student wants to estimate the number of research participants he will see in the fall semester. Using his data from the previous nine semesters, he tabulates a mean of 140 students per semester, although departmental records reflect a seasonal variation (i.e., population standard deviation) of 45 students. Calculate the 99% confidence interval.