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4. The probability that Casey, a softball player gets a hit during a...
The probability that Casey, a softball player gets a hit during a single time at bat...
The probability that Casey, a softball player gets a hit during a single time at bat is 3/10. If she goes to bat 6 times in her next game, determine the probability to four decimal places a. That she gets at least 3 hits in the game. b. That she gets at most 4 hits in the game c. That she does not get a hit in the game. d. That she gets exactly 3 hits in the game
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 A statistics instructor recorded the grades...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...
3. Presently, the mean life expectancy of a rare strain of bacteria is 12 hours. A...
3. Presently, the mean life expectancy of a rare strain of bacteria is 12 hours. A scientist claims that she has developed a medium and therefore disagrees with this hypothesis that it is not 12 hours. The scientist tests 25 cultures and finds that they have a mean life of 13.25 hours with a sample standard eviation = 2 hour. Do these results show that the medium is effective in increasing the bacteria's life expectancy? (Use <= 5%) a. State...
2) A softball hitter has a 0.260 batting average: Each at-bat she has a 260 probability of getting a hit. Today she...
2) A softball hitter has a 0.260 batting average: Each at-bat she has a 260 probability of getting a hit. Today she will get 7 at-bats. WTP she gets: a) exactly 2 hits? Formula: Substitution: Result: Tolone b) at most 3 hits? Calculator command: Result: c) at least 3 hits? Calculator command: Result: d) between 2 and 5 hits inclusive? Calculator command: med do Result:
Suppose that the probability of a baseball player getting a hit in an at-bat is 0.2804....
Suppose that the probability of a baseball player getting a hit in an at-bat is 0.2804. If the player has 33 at-bats during a week, what's the probability that he gets no more than 9 hits? Question 6 options: 1) 0.0768 2) 0.1536 3) 0.5493 4) 0.4507 5) 0.3957
5-8 show work 5. 6. At a local high school 5000 juniors and seniors recently took...
5-8 show work
5. 6. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean - 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 c. The probability of a student selected at random having scored between 400 and 575 A...
A baseball player, Mickey, who bats 310 (or .310) gets an average of 3.1 hits in...
A baseball player, Mickey, who bats 310 (or .310) gets an average of 3.1 hits in ten at bats. We will assume that each time Mickey bats he has a 0.31 probability of getting a hit. This means Mickeys at bats are independent from one another. If we also assume Mickey bats 5 times during a game and that x= the number of hits that Mickey gets then the following probability mass function, p(x), and cumulative distribution function F(x) are...
show work 1. The service manager of an appliance store decides to raffle a 50 in....
show work
1. The service manager of an appliance store decides to raffle a 50 in. flat screen television. She prepares a list of 500 regular customers from a list of recent purchases. Each customer is assigned a number from 200 to 699. The manager decides to sample 20 customers and enter them in the grand prize drawing. Use the LAST three digits in the Random Number Table starting at row 30, columnl, and reading across the list. List the...
A. In each of the following cases, indicate whether classical, empirical, or subjective probability is used....
A. In each of the following cases, indicate whether classical, empirical, or subjective probability is used. (a) A baseball player gets a hit in 50 out of 103 times at bat. The probability is 0.49 that he gets a hit in his next at bat. Classical Empirical Subjective (b) A nine-member committee of students is formed to study environmental issues. What is the likelihood that any one of the nine is chosen as the spokesperson? Classical...
The probability that Casey, a softball player gets a hit during a single time at bat is 3/10. If she goes to bat 6 times in her next game, determine the probability to four decimal places a. That she gets at least 3 hits in the game. b. That she gets at most 4 hits in the game c. That she does not get a hit in the game. d. That she gets exactly 3 hits in the game
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 A statistics instructor recorded the grades...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...
3. Presently, the mean life expectancy of a rare strain of bacteria is 12 hours. A scientist claims that she has developed a medium and therefore disagrees with this hypothesis that it is not 12 hours. The scientist tests 25 cultures and finds that they have a mean life of 13.25 hours with a sample standard eviation = 2 hour. Do these results show that the medium is effective in increasing the bacteria's life expectancy? (Use <= 5%) a. State...
2) A softball hitter has a 0.260 batting average: Each at-bat she has a 260 probability of getting a hit. Today she will get 7 at-bats. WTP she gets: a) exactly 2 hits? Formula: Substitution: Result: Tolone b) at most 3 hits? Calculator command: Result: c) at least 3 hits? Calculator command: Result: d) between 2 and 5 hits inclusive? Calculator command: med do Result:
5-8 show work
5. 6. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean - 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 c. The probability of a student selected at random having scored between 400 and 575 A...
show work
1. The service manager of an appliance store decides to raffle a 50 in. flat screen television. She prepares a list of 500 regular customers from a list of recent purchases. Each customer is assigned a number from 200 to 699. The manager decides to sample 20 customers and enter them in the grand prize drawing. Use the LAST three digits in the Random Number Table starting at row 30, columnl, and reading across the list. List the...
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