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MATH SOLVE
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A modified roulette wheel contains 44 numbers, of which 21 are red, 21 are black, and 2 are green. When the roulette wheel is spun, the ball is equally likely to land on any of the 44 numbers. For a bet on black, the house pays 1 to 2 odds. What should the odds actually be to make the bet fair? (Hint: To make the bet fair, the odds paid by the house should be the odds against the ball landing on black.)
General
2 months ago
The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 420 consumers who have owned a ColorSmart-5000 television set for five years. Of these 420 consumers, 303 say their ColorSmart-5000 television sets did not need a repair, whereas 117 say their ColorSmart-5000 television sets did need at least one repair. (a) Find a 99 percent confidence interval for the proportion of all ColorSmart-5000 television sets that have lasted at least five years without needing a single repair.
General
2 months ago
A jogger runs 140 m due west, then changes direction for the second leg of her run. At the end of the run, she is 374 m away from the starting point at an angle of 20o north of west. What were the length and direction of her second displacement?
General
2 months ago
A runner tries to keep a consistent stride length in a marathon. But, the length will change during the race. A runner has a strde length of 5 feet for the first half of the race and a stride length of 4.5 feet for the second half
General
2 months ago
One week, you tell two of your friends a secret. The next week, each of them tell two people the secret, and the next week, each of those people tell two more people. So the first week, two new people know the secret; the second week, four new people know the secret; the third week, eight new people know the secret, etc. How many people find out the secret on the sixth week? A. 32 B. 64 C. 128 D. 256
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2 months ago
Mike and Beth both write the decimal 0.8 (0.88888...)as a fraction. Mike: 45 Beth: 89 Which student wrote the correct fraction? How do you know that student is correct? Describe a mistake that could have been made by the student who wrote the incorrect fraction. (5 points)
General
2 months ago
Find the distance between the points E(3, 7) and F(6, 5). The exact distance between the two points is .
General
2 months ago
Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati toTampa. Suppose we believe that actual flight times are uniformly distributed between2 hours and 2 hours, 20 minutes.a. Show the graph of the probability density function for flight time.b. What is the probability that the flight will be no more than 5 minutes late?c. What is the probability that the flight will be more than 10 minutes late?d. What is the expected flight time?
General
2 months ago
Weinstein, McDermott, and Roediger report that students who were givne questions to be answered while studying new material had better scores when tested on the material compared to students who were simply given an opportunity to reread the material. In a similiar study, an instructor in a large psychology class gave one group of students questions to be answered while studying for the final exam. The overall average for the exam was mean = 73.4, but the n = 16 students who answered questions had a mean of M =78.3 with a standard deviation of s=8.4. For this study, did answering questions while studying produce significantly higher exam scores? Use a one tailed test with alpha = .01.
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2 months ago
It is possible to score higher than 1600 on the combined mathematics and reading portions of the SAT, but scores 1600 and above are reported as 1600. Suppose the distribution of SAT scores (combining mathematics and reading) was approximately Normal with mean of 1003 and standard deviation of 220. What proportion of SAT scores for the combined portions were reported as 1600? That is, what proportion of SAT scores were actually higher than 1600? (Enter an answer rounded to four decimal places.)
General
2 months ago
Which pairs of quadrilaterals can be shown to be congruent using rigid motions? Select Congruent or Not Congruent for each pair of quadrilaterals.quadrilateral 1 and quadrilateral 2quadrilateral 1 and quadrilateral 3quadrilateral 1 and quadrilateral 4quadrilateral 2 and quadrilateral 3quadrilateral 2 and quadrilateral 4quadrilateral 3 and quadrilateral 4
General
2 months ago
I have a geometry test I’m gonna fail. If you know any of these answers please put the number of the question,than the answer. It would help so much. I’m so stressed.
General
2 months ago
A probability experiment consists of rolling a fair 10-sided die. Find the probability of the event below. rolling a 3
General
2 months ago
The options are 3/4, 9/10, 1 1/9, and 4 1/2. If the file didn't load please say below.
General
2 months ago
the sixth-graders raised 2/3 as much money as the seventh-graders at the school fair in the morning. In the afternoon, the sixth-graders continued to raise more money. In the end, they raised twice as much money as the seventh-graders. Both the sixth-graders and seventh-graders raised $324 in the end. How much more money did the sixth-graders raise in the afternoon?
General
2 months ago
The circle below is centered at the point (3, 1) and has a radius of length 2.What is its equation?
General
2 months ago
Please someone help me with this!
General
2 months ago
estimate 4802.3 ÷ 8
General
2 months ago
x squared minus 4x=0
General
2 months ago
Quadrilateral BCDE is a rhombus and mZBCE = C - 73°. What is the value of c?
General
2 months ago
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