In a simple random sample of size 76, there were 34 individuals in the category of interest. Compute the sample proportion p.

A coach is interested in how many slam dunks the average college freshman at his university can do. Ten volunteers from the senior class step forward. After observing their performance, the coach concluded that college seniors can do an average of 10 slam dunks in a row without missing. what is the sample? what is the population?

A vaccine to prevent a severe virus was given to children within the first year of life as part of a drug study. The study reported that of the 3456bchildren randomly assigned the​ vaccine, 58 got the virus. Of the 1606 children randomly assigned the​ placebo, 46 got the virus. a. Find the sample percentage of children who caught the virus in each group. Is the sample percentage lower for the vaccine​ group, as investigators​ hoped? b. Determine whether the vaccine is effective in reducing the chance of catching the​ virus, using a significance level of 0.01.The first few steps of the​ hypothesis-testing procedure are given. Complete the procedure.

Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster. 89, 64, and 56 students are selected from the Sophomore, Junior, and Senior class with 893, 647, and 562 students respectively.

table 1 gives flight arrival numbers from a random sample of flights for airlines.  Airline 1  early =133  on-time = 416+ late =150 total 699..  Airline 2 early =58  on-time =354 late =87 total =499.  total early = 191  on-time =770  late =237  overall total =1198 . Test whether there is a difference between the two airlines in the percent of flights that arrive late.                                                                                        FIND THE RELEVANT SAMPLE PROPORTIONS IN EACH GROUP AND THE POOLED PROPORTION.                                                                    P HAT 1=  ? P HAT 2= ?  P HAT =  ?                                                                                                                    STATE THE NULL AND THE ALTERNATIVE HYPOTHESES?                                                                                      GIVE THE TEST STATISTIC AND THE P-VALUE?…

In a random sample of 68 people,17 are classified as​ "successful."   a. Determine the sample​ proportion, p, of​ "successful" people. b. If the population proportion is 0.70​,determine the standard error of the proportion.

A Statistics Canada researcher selects (at random) 10 apartments in one apartment building. The researcher then interviews all the residents in each of the 10 apartments selected. Which type of sampling did this researcher use?

In 1942, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults surveyed, 440 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 418 indicated that they were total abstainers. Complete parts (a) and (b) below. (a) Determine the sample proportion for each sample. and respectively. The proportions of the adults who took the 1942 survey and the recent survey who were total abstainers are (Round to three decimal places as needed.)

Identify the sampling techniques used in each scenario. e. surveying movie-goers as they exited the late movie, researchers determined that only young adults under the age of 22 see movies in the theater anymore.

Identify the sampling techniques used in each scenario. f. in order to sample the production yield of milk for the farm's herd of cows, random samples are taken from each of the five different types of cows.