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
lesantik [10]
3 years ago
5

A physical trainer decides to collect data to see if people are actually weight changing weight during the shelter in place. He

believes there will not be a meaningful change in weight due to the shelter in place order. He randomly chooses a sample of 30 of his clients. From each client, he records their weight before the shelter in place order, and again 10 days after the order. A summary of the data is below.
The trainer claims, "on average, there is no difference in my clients' weights before and after the shelter in place order." Select the pair of hypotheses that are appropriate for testing this claim.
H0: µd = 0
H1: µd < 0 (claim)
H0: µd = 0 (claim)
H1: µd ≠ 0
H0: µd ≠ 0 (claim)
H1: µd = 0
H0: µd = 0 (claim)
H1: µd > 0
H0: µd = 0
H1: µd > 0 (claim)
H0: µd = 0
H1: µd ≠ 0 (claim)
H0: µd = 0 (claim)
H1: µd < 0
H0: µd ≠ 0
H1: µd = 0 (claim)
b) Select the choice that best describes the nature and direction of a hypothesis test for this claim.
This is a right-tail t-test for µd.
This is a right-tail z-test for µd.
This is a two-tail t-test for µd.
This is a two-tail z-test for µd.
This is a left-tail t-test for µd.
This is a left-tail z-test for µd.
c) Find the standardized test statistic for this hypothesis test. Round your answer to 2 decimal places.
d) Find the P-value for this hypothesis test. Round your answer to 4 decimal places.
e) Using your previous calculations, select the correct decision for this hypothesis test.
Fail to reject the alternative hypothesis.
Reject the alternative hypothesis.
Fail to reject the claim.
Reject the claim.
Fail to reject the null hypothesis.
Reject the null hypothesis.
f) Consider the following statements related to the trainer's claim. Interpret your decision in the context of the problem (ignoring the claim) and interpret them in the context of the claim.
Mathematics
1 answer:
telo118 [61]3 years ago
3 0

Answer:

H0: µd = 0 (claim)

H1: µd ≠ 0

This is a two-tail t-test for µd

Step-by-step explanation:

This is a paired (dependent) sample test, with its hypothesis is written as :

H0: µd = 0

H1: µd ≠ 0

From the equality sign used in the hypothesis declaration, a not equal to ≠ sign in the alternative hypothesis is used for a two tailed t test

The data isn't attached, however bce the test statistic cannot be obtained. However, the test statistic formular for a paired sample is given as :

T = dbar / (Sd/√n)

dbar = mean of the difference ; Sd = standard deviation of the difference.

You might be interested in
what is thirty-four million plus two hundred fifty-six thousand times four hundred? Please write the answer in scientific notati
Mashutka [201]
Million has 6 zeoes
34,000,000+256,00*400

PEMDAS
multiply first
256,000*400=102,400,000
add to 34,000,000
136,400,000
now
must be in form
(x)(10^m)
such taht
1<x<10
and x times 10^m is the original number
1.364*10^8
7 0
3 years ago
Read 2 more answers
What is 5 time 2 plus 3 to the power of 2
ch4aika [34]

i believe it is 19 if im wrong sorry

5 0
3 years ago
Read 2 more answers
Use the formula to find
Marizza181 [45]

Answer:

5525

Step-by-step explanation:

Using the formula with n = 25 , then

\frac{25(26)(50+1)}{6}

= \frac{25(26)(51)}{6}

= \frac{33150}{6}

= 5525

5 0
2 years ago
If a square root parent function is vertically stretched by a factor of 6, what is
natita [175]

Parent function = √x

On stretching vertically by factor of 6

New function G(x) = 6√x

5 0
2 years ago
Left and Right end behavior of f(x)=2e^x+3 written in infinity notation.
Verizon [17]

Answer:

I think you wanna know exactly it's graph

See f(x)= 2 e^x +3

e^x is exponential function which is always positive and so lies above x axis

Multiply by 2 make it's incrementation in slope and now it will pass through (0,2)

Also adding 3 shifts graph 3 unit above y axis

So Now it will pass through (0, 2+3) that is B) (0,5)

Now At x approaches to minus infinity it will shift 3 unit up from 0 to 3 So it will pass through (-infinity,3)

Now see the pic

8 0
3 years ago
Other questions:
  • What is 1/6+1/2+1/4=?
    11·1 answer
  • A stadium floor there is in the shape of a circle has a diameter with a length of 50 yards what is the area of the circle on the
    14·1 answer
  • Given the diagram below find x, and the measure of
    7·1 answer
  • A tire has a diameter of 22". How far will the tire travel in 3 rotations?
    11·2 answers
  • Multiply two and five-eighths negative two and three-fifths .
    10·1 answer
  • How many hours did the trip take?
    13·1 answer
  • PLEASE HELP! I AM MARKING BRAINLIEST!
    14·1 answer
  • What is the factored form of this expression? 2x^3+5x^2+6x+15
    5·1 answer
  • It costs $35 per hour to rent a boat at the lake. You also need to pay a $25 fee for safety equipment. You have $200. For how lo
    11·2 answers
  • A company logo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!