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
Black_prince [1.1K]
3 years ago
12

Use a t-distribution and the given matched pair sample results to complete the test of the given hypotheses. Assume the results

come from random samples, and if the sample sizes are small, assume the underlying distribution of the differences is relatively normal. Assume that differences are computed using d=x1-x2. Test H0 : μd=0 vs Ha : μd≠0 using the paired difference sample results x¯d=9.53, sd=10.4, nd=25.
Mathematics
1 answer:
Sloan [31]3 years ago
8 0

Answer:

Step-by-step explanation:

Given that we can Assume the results come from random samples, and if the sample sizes are small, assume the underlying distribution of the differences is relatively normal. Assume that differences are computed using d=x1-x2. Test H0 : μd=0 vs Ha : μd≠0

Here test statistic = Mean difference ./std error

= Mean difference/(std dev/(sqrt n))

=\frac{x}{y} =\frac{9.53}{\frac{10.4}{\sqrt{25} } } \\=4.58

df =24

p value = 0.000121

Since p < alpha, we reject null hypothesis.

The two means are significantly different.

You might be interested in
In your random sample of 25 Chips Ahoy bags, you find a mean of 985 chips per bag, with a standard deviation of 10 chips. Run a
stealth61 [152]

Answer:

The p -value is less than 0.001.

Step-by-step explanation:

Given information:

Sample size = 25 chips

Sample mean = 985

Sample standard deviation = 10

Let as assume that sample is distributed normally.

The formula for test statistic

t=\frac{\overline{x}-\mu}{\frac{s}{\sqrt{n}}}

where,

\overline{x} is sample mean

μ is population mean.

s is sample standard deviation.

n is sample size.

The value of test statistic is

t=\frac{985-1000}{\frac{10}{\sqrt{25}}}

t=\frac{985-1000}{\frac{10}{\sqrt{25}}}

t=-7.5

The p-value is

p=2\times p(t

Therefore the p -value is less than 0.001.

6 0
3 years ago
How to show your work for 4÷29.5
S_A_V [24]
The answer is approximately 0.14 
5 0
3 years ago
What does the perpendicular bisector of a line mean?
ankoles [38]
This bisector created a 90 degree angle
7 0
2 years ago
Read 2 more answers
|-3+(-1)|= simply the expression
Andreyy89

Answer:

4

Step-by-step explanation:

First, solve in the brackets,

-3+(-1)

-3-1

-4

Since it is absolute value, take the minus sign away,

therefore the answer is 4

8 0
3 years ago
Daniel bought 3 comic books at the bookstore. He spent $8.33 on the first book and $7.33 on the
elixir [45]

Answer:

The third book cost $9.03

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • The best answer choice.
    13·1 answer
  • What is the probability of rolling a number greater than or equal to 8 with the sum of two dice, given that at least one of the
    10·2 answers
  • 45-7=35 is an addend or equation
    12·2 answers
  • I need help on this. Please
    11·1 answer
  • Marty drives 150 miles for 3 hours. What is the unit rate?
    8·1 answer
  • n a jar of coins, the ratio of nickels to dimes is 5:7. If the jar contains 350 dimes, how many nickels are there?
    13·1 answer
  • This the another answer
    13·1 answer
  • The bike owner counted 32 wheels and 18 seats.
    13·1 answer
  • Ten times the sum of three and number is -21. what is the number?
    12·2 answers
  • How much cash did Shamar receive?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!