Fins the z-Score that corresponds lo the given area under the standard normal cu

Question

Fins the z-Score that corresponds lo the given area under the standard normal curve. A multiple regression equation is y = -35,000 where x_1 is a person's age, x_2 is the person's grade point average in college, and y is the person's income. Predict the income for a person who is 26 years old and had a college grade point average of 2.3. A teacher figures that final grades in the statistics department are distributed as: 25%; 25%; 40%; 5%; 5%. At the end of a randomly selected semester, the following number of grades were recorded. Determine if the grade distribution for the department is different than expected. Uses = 0.01. Grade 42 36 60 14 8 Solve the problem. Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly 14) beans, and 17 like both red and green jelly beam. How many of the students surveyed like red or green jelly beans? Suppose you pay SI.00 lo roll a fair die with the understanding that you will get back S_3 for rolling a 2 or a 3, nothing otherwise. What are your expected winnings? There are 11 horses in a race. In how many ways can the first three positions of title order of the finish occur? (Assume there are no ties.) The odds in favor of a horse winning a rare are posted as 8 :7. Find the- probability that the horse will lose the rare. License plates are made using 3 letter* followed by 3 digits. How many plates can be made if repetition of letters and digits is allowed? Identify the sampling technique used. A researcher randomly selects and interviews fifty male and fifty female teachers systematic convenience random stratified cluster

Explanation / Answer

11.

We get the z score from the given left tailed area. As      
      
Left tailed area = 1 - 0.9564 =   0.0436  
      
Then, using table or technology,      
      
z =    -1.710356336 = -1.71 [ANSWER]  

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