There are four questions about this problem in the test shown in random order. Out of 1000 customers in the test data, there are only 100 buyers. A classification model ap to these customers, predicts 200 buyers. If buying is regarded as positive, there are 50 true noritiver

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with a very limited chance for consequences. The students rated their desire to cheat on a scale ranging from 1-100, with lower numbers indicating less desire to cheat.   Before opening the data, what would you hypothesize about this research question?   Open the data set. Before running any statistical analyses, glance through the data. Do you think that your hypothesis will be supported?   Conduct descriptive analyses and report them here.   Conduct a one-way ANOVA. Report your statistical findings (including any applicable tables in APA format) here.   What would you conclude from this analysis? What would be your next steps, if this…

There are two main fishing spots in a certain video game, a river and a lake. In the river, out of the 57 fish that were caught, 31 of them were trout. In the lake, out of the 64 fish that were caught, 24 of them were trout. Use a significance level of a = 0.02 to test the claim that the proportion of trout in the river is greater than the proportion of trout in the lake. Let the river represent population 1, and the lake represent population 2. a.) State the null and alternative hypothesis using correct symbolic form. Ho: P1 P2 H1: P1 + P2 b.) What is the critical value? (round to two decimal places)

A college instructor gave identical tests to tworandomly sampled groups of 35 students. Onegroup took the test on paper and the other tookit online. Following are the test scores:  Paper- 79, 75, 49, 78, 73, 81,70,              63, 79 ,65, 60, 74, 64, 64,                74, 69, 57, 65, 61, 58, 92,              71, 69, 66, 71, 68, 67, 81,              78, 80, 76, 67, 49, 56, 45, Online- 79, 75, 71, 81, 56, 72, 49,              75, 63, 81, 74, 72, 71, 73,              83, 59, 78, 65, 53, 47, 63,              82, 81, 76, 65, 82, 78, 76,              65, 72, 85, 84, 81, 50, 79,   a. Can you conclude that there is a difference in themean score between the paper and onlinetesting? Use a 5% level of significance.b. Construct a 95% confidence interval for thedifference in mean scores between paper andonline testing.   Please explain how to know what test needs to be performed and how to solve it using a Ti83 calculator. Thank you

A nationwide job recruiting firm wants to compare the annual incomes for childcare workers in Illinois and Massachusetts. Due to recent trends in the childcare industry, the firm suspects that the that the mean annual income of childcare workers in the state of Illinois is greater than the mean annual income of childcare workers in Massachusetts. To see if this is true, the firm selected random sample of 25 childcare workers from Illinois and an independent random sample of 25 childcare workers from Massachusetts and asked them to report their mean annual income. The data obtained were as follows. Annual income in dollars 45679, 47412, 38478, 44646, 44364, 45265, 41423, 45861, 45936, 34016, 43020, 4960o8, 43710, 45738, 41546, 38681, 34889, 39468, 45463, 53593, 40847, 38255, 45708, 57662, 54356 Illinois 41743, 36349, 44588, 40341, 32544, 38226, 46463, 42255, 38621, 32502, 37378, 40215, 41155, 38509, 47586, 46910, 56502, Massachusetts 48907, 41861, 51211, 55186, 39078, 48263, 48059,…

Assume that 800 births are randomly selected and 39 of the births are girls. Use subjective judgment to describe the number of girls as significantly​ high, significantly​ low, or neither significantly low nor significantly high.

600 students at Drew High School were surveyed. 269 of them were males. 455 of the students' wear jewelry, and 300 of the students that wear jewelry are females.

A researcher gathered a sample of participants who volunteered for a studying of phobias. She measured anxiety level of participants as they viewed photos of spiders and again when they viewed puppies. Which statistical test is appropriate for this study and why?

Suppose we want to compare the GPA for students in at least three different social classes (Upper, Middle, Working).  We obtain GPA records for a randomly selected set of 30 students, ten from each social class group.  What test should you use and why?

Suppose that you wanted to buy a new Honda Civic and you want to wait until you can get a good deal. You want to see if the usual/average price of a Honda Civic is below the blue book value of $21,550. You are unsure that the prices of the current listings around you are lower than the blue book value of a Honda Civic so you randomly sample 49 listings from the area and find their sample mean selling price is $20,015 and their sample standard deviation is $1750.