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
snow_tiger [21]
3 years ago
14

A group of students wanted to investigate the claim that the average number of text messages sent yesterday by

Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0
First we need to write the null and alternate hypothesis for this case.

Let x be the average number of text message sent. Then

Null hypothesis: x = 100
Alternate hypothesis: x > 100

The p value is 0.0853

If p value > significance level, then the null hypothesis is not rejected. If p value < significance level, then the null hypothesis is rejected.

If significance level is 10%(0.10), the p value will be less than 0.10 and we reject the null hypothesis and CAN conclude that:
The mean number of text messages sent yesterday was greater than 100.

If significance level is 5%(0.05), the p value will be greater than 0.05 and we cannot reject the null hypothesis and CANNOT conclude that:
The mean number of text messages sent yesterday was greater than 100.
You might be interested in
Rob measures his go-cart’s speed to be 250 inches per second. What is the go-cart’s speed in miles per hour (to the nearest tent
adoni [48]

Answer:

b.14.2 mph

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
Do both of them for 50 points
erastovalidia [21]

Answer:

1) 5.44, 2) 3.9

Step-by-step explanation:

1) a/b + 2b - a^2 when a = 1.4 and b = 0.2

plug in the values:

1.4/0.2 + 2(0.2) - (1.4)^2 = 7 + 0.4 - 1.96 = 5.44

2) a[b-2c]^3 - d/e when a = 2, b = -0.75, c = -1, d = 0, e = -12 5/7 (rewritten to -89/7 = 12.71)

again, plug in the values:

2[-0.75-2(-1)]^3 - 0/12.71 = 2[1.25]^3 - 0 = 2[1.95] = 3.9

5 0
3 years ago
Use the following rules to graph and label the ordered pairs on a coordinate grid with at least 4 points on the coordinate plane
Sati [7]

Answer:

3

Step-by-step explanation:

I just had this question

3 0
2 years ago
The first problem. Divide
4vir4ik [10]
Th answer is x-2.hope this helps
5 0
3 years ago
On a website, listeners rate music from 1 star to 5 stars. One song was rated 1 star by 3.5% of the listeners. There were 49 lis
defon

Answer:

1400

Step-by-step explanation:

3.5% of listeners rated the song as 1 star

49 listeners rated the song as 1 star

49 listeners = 3.5% of listeners

we want to find 100% of listeners. we can do this by multiplying both sides of the equation by 100/3.5, getting one side to 100% and the other to what it is equal to

49 * 100/3.5 listeners = 100% of listeners = 1400

3 0
2 years ago
Other questions:
  • Juli uses 12 ounces of cheese in her potato soup recipe. Her recipe yields 8 servings. If Juli needs enough for 20 servings, how
    14·1 answer
  • 72 is equal to 80% of a number n. Write and solve and equation to find n. Write the percent as a decimal.
    8·1 answer
  • How do you solve 9x+2=8x+9
    7·2 answers
  • Fabian harvests 10 pounds of tomatoes from his garden. He needs 225 pounds to make a batch of soup. If he sets aside 2.8 pounds
    14·1 answer
  • To practice for a competition, Sonya swam 0.94 kilometer in the pool each day for 3 weeks. How many meters did Sonya swim in tho
    13·1 answer
  • The distance around the middle of a sphere (the circumference) equals 37.699 in. what is the surface area of the sphere?
    5·1 answer
  • Mark wants to fence 4 rectangular gardens, each with a length of 9 1/4 feet and a width of 4 1/2 feet. What is the total length
    9·1 answer
  • 10-d = -34-5d solve this equation
    13·2 answers
  • Enter five expressions: a sum, a difference, a product, a quotient, and one that involves at least two operations that have the
    9·1 answer
  • Find the area of the triangle to the nearest tenth . Pleaseeee help
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!