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
Allushta [10]
3 years ago
8

8. The distribution for the time it takes a student to complete the fall class registration has mean of 94 minutes and standard

deviation of 10 minutes. For a random sample of 80 students, determine the mean and standard deviation (standard error) of the sample mean. What can you say about the sampling distribution of the sample mean and why
Mathematics
1 answer:
Alborosie3 years ago
7 0

Answer:

Mean = 94

Standard deviation = 1.12

The sampling distribution of the sample mean is going to be normally distributed, beause the size of the samples are 80, which is larger than 30.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation, which is also called standard error s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 94, \sigma = 10

By the Central Limit Theorem

The sampling distribution of the sample mean is going to be normally distributed, beause the size of the samples are 80, which is larger than 30.

Mean = 94

Standard deviation:

s = \frac{10}{\sqrt{80}} = 1.12

You might be interested in
Admission to the county fair costs $9 per person. The ride tickets cost $2.50 each.
maksim [4K]

Answer:$11.5

Step-by-step explanation:

Admission = $9 charged once

each ride = $2.5x (x=number of rides)

Total cost for x rides

=2.5x+9

7 0
2 years ago
Complete the table for the given rule.<br> Rule: y is 2 more than 4 times 2<br> pls help
vladimir2022 [97]

Answer:

[2,10,18]

y = 4x + 2

0,2

1,6

2,10

3,14

4,18

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
(-9)-(-13)+(3)<img src="https://tex.z-dn.net/?f=" id="TexFormula1" title="" alt="" align="absmiddle" class="latex-formula">
Cloud [144]
Hi,

( - 9) - ( - 13) + (3)  \\  - 9 - ( - 13) + (3) \\  - 9 + 13 + 3 = 7

Hope this helps.
r3t40
4 0
2 years ago
HELP
Rama09 [41]

Answer:

I ant help you but, my sister can ill get her

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Can you please help me?
zubka84 [21]

<em>So</em><em> </em><em>the</em><em> </em><em>right</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>9</em>

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> </em><em>on</em><em> </em><em>your</em><em> </em><em>assignment</em>

3 0
3 years ago
Other questions:
  • What is ten less than 87
    8·2 answers
  • Can Someone help with problems 2,3,4. Please
    9·1 answer
  • Mr.More's class plays a game.The class earns 9 points each time they answer a question correctly.The class earns 40 points playi
    7·1 answer
  • Solve the equation x^5-4x^4+4x^3+2x^2-5x+2=0
    7·1 answer
  • -0.59x+0.29=7.2 HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
    13·2 answers
  • Which expression is equivalent to <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%28n%5E%7B4%7D%20%29%5E%7B-5%7D%20%7D%7Bn%5E%7B-25
    6·1 answer
  • Josie thinks that because she has two pets, that the average number of pets each of her classmates has is also two. Is this a go
    9·1 answer
  • The number of cars in 25 families is shown in the table. Calculate the mean number of cars in a family.
    12·1 answer
  • You buy the same pair of pants in 3 different colors for $89.85. How much does each pair of pants cost?​
    12·2 answers
  • Which expressions are equivalent to 4^-2 times 7^-2
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!