1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergeu [11.5K]
3 years ago
15

A team of psychologists studied the effect of multitasking on the completion of cognitive tasks. A group of 40 women participate

d in the study. Each woman owned a smartphone equipped with the same type of keyboard. The women typed a text passage on the phone twice, one time while sitting in a quiet room (a single task) and the other time while walking (a multitask). The order of the single task and the multitask was randomly determined for each woman. The psychologists recorded the time it took each woman to type the test for both tasks. If the conditions of inference are met, which of the following tests is most appropriate to analyze the data? (A) (B) (C) (D) (E) A two-sample t-test for a difference between means A matched-pairs t-test for a mean difference A one-sample z-test for a proportion A two-sample z -test for a difference between proportions A chi-square test of independence
Mathematics
1 answer:
kakasveta [241]3 years ago
5 0

Answer: Matched-pairs t-test

Step-by-step explanation:

You might be interested in
Pls help me find f(0)
KatRina [158]
F(x)=3x^2+2x+1. if f(0), we need to plug it in to see the overall equation, so, f(0)=3(0)^2+2(0)+1. f(0)=1.
4 0
3 years ago
In 1999, the share price for General Motors stock was $144 per share but has been declining at an average rate of 14% per year.
vodomira [7]

Answer:  $5.22  (in the year 2021)

========================================================

Explanation:

The year 2021 is 22 years after 1999 since

2021 - 1999 = 22

That means we'll plug x = 22 into the equation given to us

P = 144*(0.86)^x

P = 144*(0.86)^22

P = 5.21588994768589 which is approximate

P = 5.22 rounding to the nearest cent

The share price is about $5.22 in the year 2021.

This assumes that the 14% decline keeps happening year after year; however, in reality, stocks are more complicated and fluctuate more randomly if anything.

7 0
3 years ago
The sum of a number n and 9 is greater than 20.
Serhud [2]

Answer:

Step-by-step explanation:

n + 9 > 20

n > 20 - 9

n > 11

7 0
3 years ago
1. Write the equation of the line best fit
Pavel [41]

Answer:

y=3/4x+2

Step-by-step explanation:

I found this by using desmos graphing calculator

8 0
3 years ago
What is 2 gallons minus 5 quarts
MariettaO [177]
There are 4 quarts in a gallon.
In two gallons would be 8 quarts.

2 gallons - 5 quarts = 8 quarts - 5 quarts = 3 quarts.

Note: 3 quarts is 3/4 or .75 of a gallon.
6 0
3 years ago
Other questions:
  • Write an equation for each line in slope-intercept form.
    11·1 answer
  • Line A: y = 1/2x+2
    9·1 answer
  • Please help me and hurry
    5·1 answer
  • Jenn uses 6 cups of flour to bake 40 muffins. How many muffins can she can bake if she has 15 cups of flour?
    6·2 answers
  • On Monday it snowed a certain amount. On Tuesday it snowed 3 times as much as Monday. On Wednesday it snowed twice as much as Mo
    10·1 answer
  • What is 6.5 x 12 equal to. Then compare ansewr to 74 feet
    5·1 answer
  • Which equation gives the number of quarter inches that are in 23 inch? a) 23 ÷ 14 = 212 b)23 ÷ 14 = 83 c)14 ÷ 23 = 38 d)14 ÷ 23
    9·1 answer
  • Please evaluate this function k(x)=6x+100
    6·1 answer
  • At Dizzy World theme park, Vera waited in line for 35 minutes and rode on a Magical Mushroom for 7 minutes. What is the percent
    8·1 answer
  • I need help finding how to get ABCD to QRST
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!