SAT verbal scores are normally distributed with a mean of 426 and a standard deviation of 94. Use the Empirical Rule to determine what percent of the scores lie between 332 and 426.
a. 34%
b. 49.9%
c. 68%
d. 47.5%
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2. ES3L 2.4-18
(Points: 1)
Solve the problem.
SAT verbal scores are normally distributed with a mean of 433 and a standard deviation of 90. Use the Empirical Rule to determine what percent of the scores lie between 433 and 523.
a. 34%
b. 68%
c. 49.9%
d. 47.5%
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3. ES3L 1.3-7
(Points: 1)
Solve the problem.
At a local community college, five statistics classes are randomly selected and all of the students from each class are interviewed. What sampling technique is used?
a. convenience
b. stratified
c. cluster
d. systematic
e. random
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4. ES3L 1.2-7
(Points: 1)
Solve the problem.
Identify the level of measurement for data that are the ages of students in a statistic class.
a. interval
b. nominal
c. ratio
d. ordinal
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5. ES3L 2.3-11
(Points: 1)
Solve the problem.
A student receives test scores of 62, 83, and 91. The student's final exam score is 88 and homework score is 76. Each test is worth 20% of the final grade, the final exam is 25% of the final grade, and the homework grade is 15% of the final grade. What is the student's mean score in the class?
a. 85.6
b. 80.6
c. 76.6
d. 90.6
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6. ES3L 2.3-2
(Points: 1)
Solve the problem.
The top 14 speeds, in miles per hour, for Pro-Stock drag racing over the past two decades are listed below. Find the mean speed.
a. 210.9
b. 195.8
c. 196.1
d. 201.2
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7. ES3L 3.1-43
(Points: 1)
Solve the problem.
A question has five multiple-choice answers. Find the probability of guessing an incorrect answer.
a.
b.
c.
d.
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8. ES3L 3.1-19
(Points: 1)
Solve the problem.
A study of 1000 randomly selected flights of a major airline showed that 782 of the flights arrived on time. What is the probability of a flight arriving on time?
a.
b.
c.
d.
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9. ES3L 1.3-8
(Points: 1)
Solve the problem.
A researcher randomly selects and interviews fifty male and fifty female teachers. What sampling technique is used?
a. stratified
b. random
c. systematic
d. cluster
e. convenience
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10. ES3L 2.1-5
(Points: 1)
Solve the problem.
Identify the midpoint of the first class.
a. 8
b. 9.5
c. 9
d. 22
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Submitted: 1550 days and 2 hours ago. Category: Homework Value: $8 Status: CLOSED
Optional Information
Posted by Scott 1550 days and 2 hours ago.
Response From Expert
Hi again,
#6, 7, and 10 are missing info.
Also, don't forget to Accept the other multiple choice ones.
Thanks,
Scott
Scott39361.5229166667 1550 days and 2 hours ago.
Customer Reply
6. ES3L 2.3-2
(Points: 1)
Solve the problem.
The top 14 speeds, in miles per hour, for Pro-Stock drag racing over the past two decades are listed below. Find the mean speed.
18.1 202.2 190.1 20134 191.3 201.4 192.2 201.2 193.2 201.2 &nb sp; 194.5 199.2 196.0 196.2
7. ES3L 3.1-43
(Points: 1)
Solve the problem.
A question has five multiple-choice answers. Find the probability of guessing an incorrect answer.
a 1/5
b 3/5
c 5/2
d 4/5
10 Solve the problem.
Identify the midpoint of the first class.
phone calls per day frequency
8-11 18
12-15 23
16-19 38
20-23 47
24-27 32