Question

The following is the frequency distribution for the speeds of a sample of automobiles traveling on...

The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway.

Speed
(mph)


Frequency

50 - 54

2

55 - 59

4

60 - 64

5

65 - 69

10

70 - 74

9

75 - 79

5

35

The standard deviation is

a.6.969

b.7.071

c.48.570

d.50.000

0 0
Add a comment Improve this question Transcribed image text
Request Professional Answer

Request Answer!

We need at least 10 more requests to produce the answer.

0 / 10 have requested this problem solution

The more requests, the faster the answer.

Request! (Login Required)


All students who have requested the answer will be notified once they are available.
Know the answer?
Add Answer to:
The following is the frequency distribution for the speeds of a sample of automobiles traveling on...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
  • The following is the frequency distribution for the speeds of a sample of automobiles traveling on...

    The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway, Complete the cumulative frequency and relative frequency and answer the following questions based on it.( Round relative frequency up to 2 d.p.) Speed Miles per hour Frequency Cumulative frequency Relative frequency 50-55 2 55-60 4 60-65 5 65-70 10 70-75 9 75-80 5 Σf. . What is the Mid Point of third class Time left for this

  • Use the data in Table 1 to perform the following tasks: Construct a cumulative frequency distribution...

    Use the data in Table 1 to perform the following tasks: Construct a cumulative frequency distribution (Ogive) using the speed class width (interval) of 5 mph Determine the pace, and Determine whether or not the mean speed exceeds the posted speed limit of 55 mph at 5% level of significance. TABLE 1 Speed Data Observed vehicular speed class (mph) Observed frequency 35-39 1 40-44 2 45-49 2 50-54 10 55-59 5 60-64 5 65-69 3 70-74 3 75-79 2 80-84...

  • The highway speeds of 100 cars are summarized in the frequency distribution below. Find the mean...

    The highway speeds of 100 cars are summarized in the frequency distribution below. Find the mean speed. Speed (MPH) Cars 30-39 5 40-49 18 50-59 50 60-69 17 70-79 10 a.54.5 mph b. 58.2 mph c. 55.4 mph d. 60.9 mph

  • The highway speeds of 100 cars are summarized in the frequency distribution below. Find the mean...

    The highway speeds of 100 cars are summarized in the frequency distribution below. Find the mean of the frequency distribution. Round your answer to one more decimal place than is present in the original data values. Speed (mph) / Cars ////////////////// 30-39 / 3 40-49 / 14 50-59 / 1 60-69 / 15 70-79 / 17

  • 016 7. The following data give the speeds (mi/hr), as measured by radar of 16 cars...

    016 7. The following data give the speeds (mi/hr), as measured by radar of 16 cars traveling on the interstate 1-15. Assume the population is normal population. 75 72 80 68 76 74 71 78 82 62 65 70 64 79 74 66 a) What is point estimate of the mean and standard deviation of all cars traveling on this highway. b) Compute the 95% confidence interval for the mean speed of all cars traveling on this highway. c) Compute...

  • Exhibit 8-3 A random sample of 81 automobiles traveling on a section of an interstate showed...

    Exhibit 8-3 A random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. The distribution of speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph. Refer to Exhibit 8-3. If the sample size was 25 (other factors remain unchanged), the interval for μ would _____. Group of answer choices become wider become zero become narrower not change

  • Approximate the measures of center for following GFDT. Data Frequency 40 - 44 2 45 -...

    Approximate the measures of center for following GFDT. Data Frequency 40 - 44 2 45 - 49 3 50 - 54 4 55 - 59 11 60 - 64 22 65 - 69 14 70 - 74 8 75 - 79 1 80 - 84 4 mode = median = mean =  

  • Automobiles traveling on a road with a posted speed limit of 65 miles per hour are...

    Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system. The following is a frequency distribution of speeds. Speed (miles per hour) Frequency 45 up to 55 50 55 up to 65 325 65 up to 75 275 75 up to 85 25 The standard deviation of this distribution is the closest to ____. 5.35 6.81 9.54 10.25

  • find the mean of data summarized in the given frequency table. the highway speeds of 100...

    find the mean of data summarized in the given frequency table. the highway speeds of 100 cars are summarized in the frequency distribution. below find the mean speed, speed cars 30-39 5 40-49 18 50-59 50 60-69 17 70-79 10 a-54.5,b 58.2,c55.4,d60.9.

  • Consider the below matrixA, which you can copy and paste directly into Matlab.

    Problem #1: Consider the below matrix A, which you can copy and paste directly into Matlab. The matrix contains 3 columns. The first column consists of Test #1 marks, the second column is Test # 2 marks, and the third column is final exam marks for a large linear algebra course. Each row represents a particular student.A = [36 45 75 81 59 73 77 73 73 65 72 78 65 55 83 73 57 78 84 31 60 83...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT