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
xxTIMURxx [149]
3 years ago
7

The mean annual tuition and fees for a sample of 15 private colleges was with a standard deviation of . A dotplot shows that it

is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from 32,500 a) state the null and alternate hypotheses b) calculate the standard error c) calculate the test statistic d) find the p - value .
Mathematics
1 answer:
Fudgin [204]3 years ago
7 0

Answer:

Step-by-step explanation:

The question is incomplete. The complete question is:

The mean annual tuition and fees for a sample of 15 private colleges was $35,500 with a standard deviation of $6500. A dotplot shows that it is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from $32,500. State the null and alternate hypotheses. A) H0: 4 = 32,500, H:4=35,500 C) H: 4 = 35,500, H7:35,500 B) H: 4 = 32,500, H : 4 # 32,500 D) H0:41 # 32,500, H : 4 = 32,500

Solution

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

H0: µ = 32500

For the alternative hypothesis,

Ha: µ ≠ 32500

This is a two tailed test.

Since the number of samples is small and the population standard deviation is not given, the distribution is a student's t.

Since n = 15,

Degrees of freedom, df = n - 1 = 15 - 1 = 14

t = (x - µ)/(s/√n)

Where

x = sample mean = 35500

µ = population mean = 32500

s = samples standard deviation = 6500

t = (35500 - 32500)/(6500/√15) = 1.79

We would determine the p value using the t test calculator. It becomes

p = 0.095

Assuming alpha = 0.05

Since alpha, 0.05 < than the p value, 0.095, then we would fail to reject the null hypothesis.

You might be interested in
Help if you can its kinda hard
zimovet [89]

The equation would be -9+-9 = -18

8 0
2 years ago
Read 2 more answers
In the equation x+12=30 does x=16 explain your answer
denpristay [2]
No x does NOT equal 16. you would substitute x for 16 which gives you 16+12. That equals 28 not 30. The correct answer is x=18
4 0
2 years ago
Can somebody please help me, this is due in 20 minutes​
Alex73 [517]

Answer:

61°

Step-by-step explanation:

In order for triangle LMN and PQR to be congruent, angle M and angle Q must equal. thus, we can set 2x-26=x+16

with basic algebraic manipulation, x=42. we then plug it back into the angle M or Q, getting angle M/Q= 58°

since this is a isoceles, the 2 base angle are identical, so 180= 58+2(angle P)

thus, angle P= 61

6 0
3 years ago
Solve. -1/8c=2<br> a. 4<br> b. –16<br> c. –4<br> d. 16
kotykmax [81]
\frac{-1}{8c} =2
This requires that  c ≠ 0 , meaning c≠0
\frac{-1}{8c} =2
Multiply by x to eliminate var in denominator
\frac{ \not c*(-1)}{ 8 \not c} =c*2
\frac{-1}{8} =c*2
Common denominator  is 8 
\frac{\not 8(-1)}{\not 8} =8c*2
-1=8c*2
-1=16c
x=-16
The answer is: b. -16
4 0
3 years ago
A couple's anniversary dinner bill was $126.50. They tipped their waiter 20% of the bill. What was the total bill including tip?
erastova [34]

Answer:

$151.80 was the total bill including tip.

Step-by-step explanation:

$126.50 x 20% = $25.30

$126.50 + $25.30 = $151.80

3 0
2 years ago
Read 2 more answers
Other questions:
  • How do I solve and graph this
    9·1 answer
  • In triangle ABC, m a = 45 m b =65 and a = 15.05. Use the law of sines to find b. Round your answer to the nearest tenth.
    10·2 answers
  • Solve 7x-6 &gt; 8 and 3x + 4&gt; 22 for x. Could you please help solve this.
    10·2 answers
  • A global positioning satelite transmits a radio wave with a wavelength of 19 cm. What is the frequncy of the radio wave ?
    10·1 answer
  • you are making necklaces for your friends. You have 72 blue beads and 42 red beads. Each friend will recieve a identical necklac
    15·2 answers
  • What times what equals 20 and adds to -9
    14·2 answers
  • HELP DUE IN AN HOUR
    15·2 answers
  • Please help with work
    13·1 answer
  • GIVING AWAY BRAINLIEST TO FIRST AND CORRECT ANSWER!!! Rewrite the following function in slope intercept form.
    15·2 answers
  • Roxanne likes to fish. She estimates that 30% of the fish she catches are
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!