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
soldier1979 [14.2K]
3 years ago
7

A survey of 35 people was conducted to compare their self-reported height to their actual height. The difference between reporte

d height and actual height was calculated. You're testing the claim that the mean difference is greater than 0.7. From the sample, the mean difference was 0.95, with a standard deviation of 0.44. Calculate the test statistic, rounded to two decimal place
Mathematics
1 answer:
Over [174]3 years ago
3 0

Answer:

The test statistic is t = 3.36.

Step-by-step explanation:

You're testing the claim that the mean difference is greater than 0.7.

At the null hypothesis, we test if the mean difference is of 0.7 or less, that is:

H_0: \mu \leq 0.7

At the alternate hypothesis, we test if the mean difference is greater than 0.7, that is:

H_1: \mu > 0.7

The test statistic is:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

0.7 is tested at the null hypothesis:

This means that \mu = 0.7

A survey of 35 people was conducted to compare their self-reported height to their actual height.

This means that n = 35

From the sample, the mean difference was 0.95, with a standard deviation of 0.44.

This means that X = 0.95, s = 0.44

Calculate the test statistic

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{0.95 - 0.7}{\frac{0.44}{\sqrt{35}}}

t = 3.36

The test statistic is t = 3.36.

You might be interested in
In the figure at the right what is m < 1 if m < 3= 70 degrees
Arturiano [62]
<h2>○=> <u>Correct option</u> :</h2>

\color{plum}\tt\bold{(D)  \: 70}

<h3>○=> <u>Steps to derive correct option</u> :</h3>

Angle 1 and angle 3 are vertically opposite angles.

We know that :

▪︎ Vertically opposite angles are always equal.

Which means :

Angle 1 = Angle 3

Thus, the measure of angle 3 = 70°

▪︎Therefore, the correct option is (D) 70

3 0
3 years ago
Solve 10 3/4 - 6 4/5
MAXImum [283]
Alright, so the first thing I would do is find the LCM of the dividends, which is 20.  So we have 10 15/20 and 6 16/20.  You can either leave it there and just carry the one (20 in this case) for 3 19/20.
If you multiply 10 by 20 and add 15, or 6 by 20 and add 16 (which I think is easier) you get 215/20 - 136/20 = 79/20.  It can be simplified from here if you teacher wants it in the future.
7 0
3 years ago
Read 2 more answers
Find two positive consecutive integers whose product is 132.
iren2701 [21]
If x is the first integer, then x+1 is the second. x(x+1)=132 or x^2+x-132=0. This factors as (x-11)(x+12)=0. Thus either x=11 or x=-12 
<span>So either 11 and 12 or -12 and -11 will do.</span>
7 0
3 years ago
Which shapes are congruent?<br> (See attachment)
Andre45 [30]
Hello! Congruent figures are those with the same size and shape. With that being said, if you look at the shapes correctly, here are your answers:

Quad 1 & 2: Not Congruent
Quad 1 & 3: Congruent
Quad 1 & 4: Congruent
Quad 2 & 3: Not Congruent
Quad 2 & 4: Not Congruent
Quad 3 & 4: Congruent
3 0
3 years ago
Read 2 more answers
The table below shows the results of a survey conducted among the employees of a company to find the preferred choices for inves
gladu [14]

Answer: B

Step-by-step explanation:

Took the test

6 0
2 years ago
Other questions:
  • Here is the histogram of a data distribution. All class widths are 1
    5·2 answers
  • What is the partial product of 563 x 410
    6·1 answer
  • Help pretty pleeeeeeease!
    10·1 answer
  • HELPPP ITS ABOUt DILATION EXPLANATION NEEDED PLZZZ
    7·1 answer
  • Can anyone help me with this one
    10·2 answers
  • Choose the correct system of linear equations
    10·1 answer
  • I dont know what To Put here srry There is a question here it pic
    13·1 answer
  • Please help i have an F in math
    8·2 answers
  • Vbb. Pls help 50 points
    13·1 answer
  • george’s average bowling score is 180; he bowls in a league where the average for all bowlers is 150 and the standard deviation
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!