The Ice Chalet offers dozens of different beginning iceskating classes. All of the class names are put into a bucket. The 5 P.M., Monday night, ages  8  to  12 , beginning ice-skating class was picked. In that class were  66  girls and  14  boys. Suppose that we are interested in the true proportion of girls, ages  8  to  12 , in all beginning ice-skating classes at the Ice Chalet. Assume that the children in the selected class are a random sample of the population. We want to construct a  96%  confidence interval for the true proportion of girls in the ages  8  to  12  beginning ice-skating classes at the Ice Chalet. Select the correct graph of the normal density curve, with properly labeled areas, upper and lower limits of the confidence interval, and the sample proportion.

Giving à test to a group of students, the grades and gender are summarized below B. C Total Male 10 11 6. 30 Female 16 20 38 Total 26 31 11 68 A,

A researcher wants to conduct an experiment to determine which environment is best suited for studying - a library, in one's own room, or outside. A total of 30 university students volunteer to participate in the experiment. The researcher believes that gender has an effect on the results. How many blocks are there in the experiment?

Rayann conducted a survey of the cars in four parking lots and wrote the following observations: 15 of the 36 cars in lot 1 were blue43 of the 92 cars in lot 2 were blue12 of the 30 cars in lot 3 were blue32 of the 52 cars in lot 4 were blue Based on the survey, which parking lot had the greatest percentage of blue cars?   a Lot 1  b Lot 2  c Lot 3  d Lot 4

A. 62.5%B. 37.5%C. 75 StudentsD. 45 Students

Part b through f

An addictions researcher wants to see if male and female alcoholics differ in the type of alcohol they consume. She goes to a large alcohol detox facility, gets a sample of men and a sample of women, and checks each person's chart to find the beverage of choice. She classifies the beverages as (a) wine, (b) beer, or (c) hard liquor. She then figures out how many people of this sample of 66 people fall into each category. What type of test should she perform? Answer Choices: 2-way ANOVA   chi-square test of independence   correlation   chi-square goodness of fit   Imagine an elementary school teacher who is a follower of Carl Rogers and believes that unconditional positive regard leads to psychological health and positive behaviors. He obtains a random sample of 40 children from other teachers' classrooms at his school and, through home observation, he categorizes each child as receiving unconditional positive regard frequently, sometimes, or rarely. He then has each…

2) You want to figure out if there is a difference in lengths between male and female kestrels (kestrels are small falcons found all over Northern Virginia). You catch 11 females and 10 males with the following results (in cm): Females: 27.3 28.2 25.1 25.6 25.5 29.1 27.0 25.4 25.8 27.3 26.6Males: 24.1 23.3 24.8 24.8 23.5 23.0 23.8 23.4 21.6 20.3Is there a difference in lengths? Use α = .01. Note that you have to calculate everything yourself.

In a local shelter, 150 people donated blood during the blood donation week. The samples collected of the different blood types are shown in the graph below.   How many more people with Type A blood donated blood than those with Type B blood?   A.6 B.4 C.120 D.12

A study investigated whether price affects people's judgment. Twenty people each tasted six cabernet sauvignon wines and rated how they liked them on a scale of 1 to 6. Prior to tasting each wine, participants were told the price of the wine. Of the six wines tasted, two were actually the same wine, but for one tasting the participant was told that the wine cost $10 per bottle and for the other tasting the participant was told that the wine cost $90 per bottle. The participants were randomly assigned either to taste the $90 wine first and the $10 wine second, or the $10 wine first and the $90 wine second. Differences were calculated by subtracting the rating for the tasting in which the participant thought the wine cost $10 from the rating for the tasting in which the participant thought the wine cost $90. Difference ($90 3 4 $10) 2 1 USE SALT 0 3 0 2 1 3 3 1 4 1 2 Find the test statistic. (Round your answer to two decimal places.) t = 2 1 -1 Carry out a hypothesis test to determine if…