The mean ACT composite score in a recent year is 20.8. A random sample of 36...
The mean ACT composite score in a recent year is 20.8. A random sample of 36 ACT composite scores is selected. What is the probability that the mean score for the sample is
(a) less than 21.6,
(b) more than 19.8, and
(c) between 20.5 and 21.5? Assume σ=5.6.
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The mean ACT composite score in a recent year is 20.8. A random
sample of 36...
In Exercises 22-23, find the indicated probabilities and interpret the results. 22. Refer to Exercise 15....
In Exercises 22-23, find the indicated probabilities and interpret the results. 22. Refer to Exercise 15. A random sample of 2 years is selected. Find the probability that the mean amount of black carbon emissions for the sample is (a) less than 12.3 gigagrams per year, (b) between 15.4 and 19.6 gigagrams per year, and (c) greater than 17.7 gigagrams per year Compare your answers with those in Exercise 15. 23. The mean ACT composite score in a recent year...
2 3 + . . The ACT Composite scores have an average of 20.8 with a...
2 3 + . . The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability that the...
The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this...
The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? c. What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability that the sample mean will be...
On a dry surface, the braking distances (in feet), from 60 miles per hour to a...
On a dry surface, the braking distances (in feet), from 60 miles per hour to a complete stop, of a sedan can be approximated by a normal distribution, as shown in the figure below. Use this information in Exercises 16-21 Braking Distance of a Sedan u 132 ft ơ-4.53 ft 115 120 125 130 135 140 145 Braking distance (in feet) 16. Find the braking distance of a sedan that corresponds to z2.75. 17. Find the braking distance of a...
6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8...
6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? What is the probability that the sample mean will be between 20.8 and 26.32 d. What is the probability that the sample mean will be...
6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8...
6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? c. What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability that the sample mean will...
The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this...
The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? c. What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability that the sample mean will be...
PLEASE SHOW WORK FOR EACH ANSWER a. 6. The ACT Composite scores have an average of...
PLEASE SHOW WORK FOR EACH ANSWER
a. 6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability...
Question 17 (2.34375 points) The mean composite ACT score for graduating seniors between 2013 and 2015...
Question 17 (2.34375 points) The mean composite ACT score for graduating seniors between 2013 and 2015 was 21.0 with a standard deviation of 5.4. Assume the composite ACT scores are normally distributed. What is the probability that a randomly selected composite ACT score is between 19 and 23? Round answer to four decimal places.
i need a break down to the simplist level possible In a recent year, the ACT...
i need a break down to the simplist level possible
In a recent year, the ACT scores on the math portion were distributed normal poslation mean of 21.1 and a population standard deviation of 53. Find the pro randomly selected student has a score between 19 and 24 7 The time spent waiting for a kidney transplant is distributed normally with mean of 1574 and a standard deviation of 212.5 days. What waiting time represents the first quarte The mean...
In Exercises 22-23, find the indicated probabilities and interpret the results. 22. Refer to Exercise 15. A random sample of 2 years is selected. Find the probability that the mean amount of black carbon emissions for the sample is (a) less than 12.3 gigagrams per year, (b) between 15.4 and 19.6 gigagrams per year, and (c) greater than 17.7 gigagrams per year Compare your answers with those in Exercise 15. 23. The mean ACT composite score in a recent year...
2 3 + . . The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability that the...
On a dry surface, the braking distances (in feet), from 60 miles per hour to a complete stop, of a sedan can be approximated by a normal distribution, as shown in the figure below. Use this information in Exercises 16-21 Braking Distance of a Sedan u 132 ft ơ-4.53 ft 115 120 125 130 135 140 145 Braking distance (in feet) 16. Find the braking distance of a sedan that corresponds to z2.75. 17. Find the braking distance of a...
6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? What is the probability that the sample mean will be between 20.8 and 26.32 d. What is the probability that the sample mean will be...
6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. a. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? c. What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability that the sample mean will...
PLEASE SHOW WORK FOR EACH ANSWER
a. 6. The ACT Composite scores have an average of 20.8 with a standard deviation of 5.8 (this is actually true). A sample of 64 scores is selected. What is the probability that the sample mean will be larger than 24.1? b. What is the probability that the sample mean will be less than 16.6? What is the probability that the sample mean will be between 20.8 and 26.3? d. What is the probability...
Question 17 (2.34375 points) The mean composite ACT score for graduating seniors between 2013 and 2015 was 21.0 with a standard deviation of 5.4. Assume the composite ACT scores are normally distributed. What is the probability that a randomly selected composite ACT score is between 19 and 23? Round answer to four decimal places.
i need a break down to the simplist level possible
In a recent year, the ACT scores on the math portion were distributed normal poslation mean of 21.1 and a population standard deviation of 53. Find the pro randomly selected student has a score between 19 and 24 7 The time spent waiting for a kidney transplant is distributed normally with mean of 1574 and a standard deviation of 212.5 days. What waiting time represents the first quarte The mean...
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