The times spent, in minutes, by 30 girls and by 40 boys on an assignment are detailed

Question:

The times spent, in minutes, by 30 girls and by 40 boys on an assignment are detailed in the following table.

a. For the boys and for the girls, calculate estimates of the mean and standard deviation.

b. It is required to make a comparison between the times spent by the two groups.

i. What do the means tell us about the times spent?

ii. Use the standard deviations to compare the times spent by the two groups.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

See More Books

Question Posted: Sep 13, 2021 01:55 AM

See More Questions

Are the values of the mean and standard deviation that are calculated using grouped data exact or approximate values of the mean and standard deviation, respectively? Explain.
A work cell is required to make 80 computerized diagnostic assemblies (for installation into hybrid automobiles) each day. The cell currently works an eight hour shift, of which seven hours are...
It is required to design a BPF with the following specifications -0.02 < |H(ejw)l < 0.02, 0<= |w| <=2n 0.95 < |H(ejw) < 1.05, ,3n <= Iw| <= 0.7n, -0.001 < |H(ejw)| <...
Umida Ltd is considering acquiring Trinity Ltd. Both companies are all-equity firms. Umida and Trinity have 5 million and 6 million shares outstanding respectively. Umida generates $2 million in...
Draw the Lewis electron dot diagram for each substance. a. GeH4 b. ClF
Wiset Company completes these transactions during April of the current year (the terms of all its credit sales are 2/10, n/30). Apr. 2 Purchased $ 14,300 of merchandise on credit from Noth Company,...
A business firm is thinking of buying a capital good, which will earn $$2,000$ a year for the next four years and cost $$7,000.$ The interest rate is 8 percent. Should the firm buy the capital...
Presented below are two independent situations. (a) On March 3, Kitselman Appliances sells $650,000 of its receivables to Ervay Factors Inc. Ervay Factors assesses a finance charge of 3% of the...
Write one page about pipelining in smartphones that support Android operating systems. (10 marks)
The Jacksons are considering selling their current residence, buying a small home near Averys parents for $220,000 with a $100,000 30-year mortgage at 3.5%, and investing the net proceeds in their...
Two days before a skiing competition, the depths of snow, x metres, at 32 points on the course were measured and it was discovered that the numerical values of x and x 2 were equal. a. Given that the...
The temperatures, T Celsius, at seven locations in the Central Kalahari Game Reserve were recorded at 4p.m. one January afternoon. The values of T, correct to 1 decimal place, were: 32.1, 31.7, 31.2,...
1. Since a budget is made up of fixed expenses and variable expenses identify which of Shelby's expenses fall into each category. Then total each category and compare it to her monthly income to...
ppt presentation for this document Ontario ( public safety and security ) v. criminal lawers' association, [2010] 1 SCR 815, 2010 SCC 23 (CanLII) The identified legislation related to the case is the...
2. Michael Scott bought 3 boxes of cereal at $3.79 each, a roll of paper towels for $1.78 each, and 2 pounds of margarine for $1.28 a pound. How much change would Michael get back from $20.00 if...
The UPS Company or The United Parcel Service Company. Explain in quite deep detail. Explain the logistics activitiesof the UPS company Explain the logistics issues of the UPS company How to improve...
A manufacturing department completed and transferred to finished goods a total of 50,000 units. They also had 2,500 units in ending work in process inventory. Of this ending inventory, direct...
m Activity 4: Emotional Reactions A+ ing.com Express VPN McAfee Security LastPass password... 16 18 The purpose of this activity is to identify the components of emotion. Read each of the situations...
Rank the following anions in order of decreasing basicity: CH O CH,o CH
A survey of 70 college freshmen asked whether students planned to take biology, chemistry, or physics during their first year. Use the diagram to answer each question. How many of the surveyed...
a. Differentiate (x 2 + 2) 4 with respect to x. b. Hence, find [x(x + 2) dx.
Evaluate: a. b. c. d. e. f. S 3x dx
A curve is such that Given that the curve passes through the point (3, 2), find the equation of the curve. dy - 2x-3. dx ||
00 00 1) A state transition diagram for a synchronous finite state machine is shown in Figure 3. Derive the combinatorial logic required to implement this FSM with the use of Karnaugh maps. Note that...
Prove that Russian multiplication does what it needs to do, i.e. the result is the product of the two integers. Do not use the proof of the book. It is mainly an exercise in understanding the binary...
What is the fundament difference between growing a unicorn versus a camel? What are the financial recommendations for start-ups and the reasons given for those choices? Do you agree with these...

The times spent, in minutes, by 30 girls and by 40 boys on an assignment are detailed

Question:

Time spent (min 20- 30- 40- 60-80 No. girls (f 14 7 3 No, boy ambric 15 11 7 7

Step by Step Answer:

a To calculate the estimates of mean and standard deviation for the girls and boys we first need to ...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

Students also viewed these Mathematics questions