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
svetlana [45]
3 years ago
9

Some IQ tests are standardized based on the assumption that the population mean is 100 and the standard deviation is 15. Test gr

aders decide to reject this hypothesis if a random sample of 25 people has a mean IQ greater than 110. Assuming that IQ scores are normally distributed, what's the power of the test if the true population mean is 105?
Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
3 0

Answer:

0.952

Step-by-step explanation:

we know that

here standard error =std deviation÷(n)^1/2  

=15/(25)^1/2 =15/5=3

Assuming that IQ scores are normally distributed

Now, probability of a Type II error

=P(X<110) = P(Z<(110-105)/3)=P(Z<1.67)

=0.952

 the power of the test if the true population mean is 105 = 0.952

You might be interested in
How many tenths are in 8.32?
Finger [1]

there are 3 tenths in 8.32

8 0
2 years ago
Read 2 more answers
Which equation best represents the situation?
Gennadij [26K]
It is A because
x/6 gives pizza by 1 guest and adding0.5 gives total expence
7 0
3 years ago
What is 1675 divided by 25 with remainder?
attashe74 [19]

Answer:

975

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
6)
aleksklad [387]

Answer:

..2.50x + 3.75x = 15..

Step-by-step explanation:

i think

8 0
2 years ago
PLEAASE HEELP! Will mark brainly!!!
bogdanovich [222]
Please repost... picture is all black
6 0
2 years ago
Other questions:
  • Enter your answer and show all the steps that you use to solve this problem in the space provided. Find the circumference of the
    6·1 answer
  • I need help asap pls​
    9·1 answer
  • Convert the following quantities to the indicated units. 57 miles per hour to meters per second
    9·1 answer
  • Please help meeeeeeeeeeeee
    10·1 answer
  • What is an equation of the line that passes through the point (1,-3) and is perpendicular to the line x+3y=21?
    12·1 answer
  • To stay properly hydrated, a person should drink 32 fluid ounces of water for every 60 minutes of exercise. How much water shoul
    14·2 answers
  • What ratios are equivalent to 4:3?<br> 7:2<br> 12/42<br> 28:21<br> 42:12
    14·1 answer
  • Pls help me, i dont know what i’m doing
    14·1 answer
  • Solve for x <br> answer must be simplified <br> -30&lt; x/-4
    5·2 answers
  • There is a 50% chance that a volleyball team will win any one of its four remaining games this year.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!