A student takes an exam containing 15 true or false questions. If the student guesses, what is the probability that he will get exactly 13 questions right? Round your answer to four decimal places.

Sharlene has just put a down payment on a lot in a small subdivision. There are 24 lots in the subdivision, and all are approximately 0.3 acres in size. Four builders have been contracted by the subdivision manager to each build six homes in order to finish the subdivision in 6 months. Sharlene's uncle is one of the builders contracted by the subdivision manager. What is the probability that Sharlene's uncle will be the builder that builds her house? Round your answer to two decimal places, if necessary.

Please no written by hand solution Kate recently invested in real estate with the intention of selling the property one year from today. She has modeled the returns on that investment based on three economic scenarios. She believes that if the economy stays healthy, then her investment will generate a 30 percent return. However, if the economy softens, as predicted, the return will be 10 percent, while the return will be -25 percent if the economy slips into a recession. If the probabilities of the healthy, soft, and recessionary states are 0.6, 0.2, and 0.2, respectively, then what are the expected return and the standard deviation of the return on Kate❝s investment? Calculate the coefficient of variation for this investment. (Round expected return to 3 decimal places, e.g. 0.125 and round intermediate calculations and standard deviation to 5 decimal places, e.g. 0.07680.)

please help with 1 and 2   Students taking the Graduate Management Admissions Test (GMAT) were asked about their undergraduate major and intent to pursue their MBA as a full-time or part-time student. A summary of their responses follows. Answer questions 6-9.     Undergraduate Major       Business Engineering Other Totals Intended Enrollment Status Full-Time 352 197 251 800 Part-Time 150 161 194 505 Totals 502 358 445 1305   1. Refer to Table 1. What is the probability that the student was an undergraduate business major?  Group of answer choices 0.4400. 0.3410. 0.3847. 0.2743.       2. Refer to Table 1. What is the probability that an undergraduate business major intends to attend classes full-time in pursuit of an MBA degree ?  Group of answer choices 0.7011. 0.6130. 0.4400. 0.2697.

use the data to compute the probability that an adult in the tri state region smokes            kentucky 47 176 indiana 32 134 ohio 39 182 total 118 492

Suppose we are again given 20 tulip bulbs that are very similar in appearance. Information on this new set of tulips is summarized below: Early (E) Late (L) Totals Red (R) Yellow (Y) Totals 5 5 10 5 5 10 10 10 20 What is P(Y)? (Enter the probability with two decimal places)

How was 1.40331 calculated?

Given the following data, find the weight that represents the 31st percentile. Weights of Newborn Babies 7.9 7.6 6.5 7.9 7.4 8.5 6.2 6.9 9.2 7.8 00 7.4 7.0 6.5 7.9 8.2

The promoter of a football game is concerned that it will rain. She has the option of spending ​$14,040 on insurance that will pay ​$39,000 if it rains. She estimates that the revenue from the game will be ​$65,040 if it does not rain and ​$30,040 if it does rain. What must the chance of rain be if buying the policy has the same expected return as not buying​ it? Write expressions showing the expected returns if the promoter does and does not purchase the​ insurance, using p to represent the probability of rain.   Without​ insurance, E(return)​ =   With​ insurance, E(return)​ =   The chance of rain must be _%.

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