Question

In: Statistics and Probability

dfgasdsgsf32414123435315 The following data show the cost of electricity (in RM) during a summer month for...

dfgasdsgsf32414123435315

  1. The following data show the cost of electricity (in RM) during a summer month for a random sample of 30 one-bedroom apartments in a large city.

17.5

33.7

31.9

21.7

19.1

19.6

20.9

39.7

36.5

21.7

29.7

19.9

33.2

35.7

20.7

27.8

32.8

19.7

14.5

27.2

15.7

15.2

23.6

24.2

26.8

21.6

13.9

42.5

14.7

35.1

  1. a)Construct a frequency distribution.         
  2. b)Using the result from part (i), calculate the relative frequencies for each class.
  3. c)Using the result from part (i), calculate the cumulative frequencies for each class.
  4. d)Construct a frequency histogram for these data.
  5. e)Using the result from part (i), compute the mean.                                            
  6. f)Using the result from part (v), compute the standard deviation.

Solutions

Expert Solution

Histogram:

orchestra answered 2 years ago
Next > < Previous

Related Solutions

Question 1 The following data represent the cost of electricity (in Rand) during July 2019 for...
Question 1 The following data represent the cost of electricity (in Rand) during July 2019 for a random sample of 30 one-bedroom apartments in a large city: 96 171 202 178 147 197 130 149 167 191 135 129 158 166 150 95 187 144 139 175 123 111 116 202 157 128 82 102 112 95 (a) Construct a stem and leaf graph for the given data. (10) (b) Construct a histogram for the given data. (10) (c) Draw...
The following data represent the high-temperature distribution for a summer month in a city for some...
The following data represent the high-temperature distribution for a summer month in a city for some of the last 130 years. Treat the data as a population. Complete parts (a) through (c). Temperature : 50-59 60-69 70-79 80-89 90-99 100-109 Days: 5 303 1450 1516 438 8 (a) Approximate the mean and standard deviation for temperature. Mean = __________ (Round to one decimal place as needed.) Standard Deviation = ___________ (Round to one decimal place as needed.) (b) Use the...
The following data represent the​ high-temperature distribution for a summer month in a city for some...
The following data represent the​ high-temperature distribution for a summer month in a city for some of the last 130 years. Treat the data as a population. Temperature ​50-59 ​ 60-69 ​ 70-79 ​ 80-89 ​90-99 ​ 100-109 Days 1 305 1469 1523 571 6 a.) Approximate the mean and standard deviation for temperature. Mean = Standard Deviation = b.) Use the frequency histogram of the data to verify that the distribution is bell shaped. - Yes, the frequency histogram...
The following data represent the​ high-temperature distribution for a summer month in a city for some...
The following data represent the​ high-temperature distribution for a summer month in a city for some of the last 130 years. Treat the data as a population. Complete parts​ (a) through​ (c). Temperature (degrees F)   Lower Limit   Upper Limit   Days 50-59   50   59   1 60-69   60   69   307 70-79   70   79   1467 80-89   80   89   1514 90-99   90   99   455 100-109   100   109   7 ​(1a) Approximate the mean and standard deviation for temperature. μ=_____degrees°F ​(Round to one decimal place as​...
Tess Company's inventory records show the following data for the month of May: Units Unit Cost...
Tess Company's inventory records show the following data for the month of May: Units Unit Cost Inventory, May 1 200 $2.00 Purchases: May 8 200 3.00 May 15 100 4.00 The company uses a periodic inventory system. A physical inventory on May 30 shows 150 units on hand. Assuming FIFO (First-In-First-Out) inventory costing, calculate the cost of goods sold. a. $1,100 b. $850 c. $700 d. $980
Shellhammer Company's inventory records show the following data for the month of September: Units Unit Cost...
Shellhammer Company's inventory records show the following data for the month of September: Units Unit Cost Inventory, September 1 100 $3.34 Purchases: September 8 450 3.50 September 18 350 3.70 A physical inventory on September 30 shows 200 units on hand. Calculate the value of the ending inventory and cost of goods sold if the company uses weighted average inventory costing and a periodic inventory system. (Round cost per unit to 2 decimal places and ending inventory and cost of...
A company’s electricity cost is a mixed cost - partly fixed and partly variable. If during...
A company’s electricity cost is a mixed cost - partly fixed and partly variable. If during the month with the largest electricity use the company used 15,000 machine hours and had an electricity cost of $36,000 and during the month with the smallest electricity use the company used 7,000 machine hours and had an electricity cost of $20,000. 1. Its variable cost per machine hour (as determined by the high-low method) would be ____________ 2. Its fixed cost per month...
Hess Company's inventory records show the following data for the month of September:                             &
Hess Company's inventory records show the following data for the month of September:                                                                                       Units                          Unit Cost Inventory, September 1                     100                            $3.00 Purchases: September 8                   450                              3.50                    September 18                    300                              3.70 A physical inventory on September 30 shows 150 units on hand. a. Calculate the value of ending inventory and cost of goods sold if the company uses FIFO inventory costing and a periodic inventory system. b. Calculate the value of ending inventory and cost of goods sold if...
1.Nutt Industries electricity costs and machine hours over a six-month period follow: Machine Electricity Hours Cost...
1.Nutt Industries electricity costs and machine hours over a six-month period follow: Machine Electricity Hours Cost January 2000 $4,800 February 2500 5,200 March 3000 5,400 April 2400 5,000 May 2800 5,600 June 2200 5,000 Required: a. Using the high-low method, what is the estimated electricity cost per machine hour? b. Differentiate high-low method from other methods of inventory valuation.
The data below are the temperatures on randomly chosen days during the summer and the number...
The data below are the temperatures on randomly chosen days during the summer and the number of employee absences at a local company on those days. Temperature,x: 72,85, 91, 90, 88, 98, 75, 100, 80 Number of absences, y: 3, 7, 10, 10 8, 15, 4, 15, 5 A) Find the residual when temperature is 98. Analyze the result.   B) Test the claim, at the α = 0.05 level of significance, that a linear relation exists between the temperature and...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT