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
rusak2 [61]
2 years ago
10

13) 14) A) 870 C) 74 B) 1112 D) 53

Mathematics
1 answer:
V125BC [204]2 years ago
5 0

Answer: 13)74

14)53

Step-by-step explanation:

You might be interested in
Consider the following hypothesis test: H 0: 20 H a: < 20 A sample of 60 provided a sample mean of 19.5. The population stand
viva [34]

Answer:

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.          

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 60

Sample mean, \bar{x} = 19.5

Sample size, n = 60

Alpha, α = 0.05

Population standard deviation, σ = 1.8

First, we design the null and the alternate hypothesis

H_{0}: \mu = 20\\H_A: \mu < 20

We use One-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{19.5 - 20}{\frac{1.8}{\sqrt{60}} } = -2.151

Now, z_{critical} \text{ at 0.05 level of significance } = -1.64

Since,  

z_{stat} < z_{critical}

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

5 0
3 years ago
A string of decorative lights is 25 feet long. The first light on the string is 16 inches from the plug. The lights on the strin
joja [24]
25 feet = 25 x 12 = 300 inches

First light is at 16 inches.
300 - 16 = 284 inches

Find the rest of the bulbs:
284 ÷ 4 = 71

Total number of lights = 71 + 1 = 72

Answer  72 lights
8 0
3 years ago
If you are facing north. Turn 90 degrees left. Turn 180 degrees right. Reverse direction. Turn 45 degrees left. Reverse directio
ololo11 [35]
Northeast. Im not 100% sure though,,,,
7 0
2 years ago
Read 2 more answers
John needs to find out the probability that he will sell all his cars by the end of the
Nezavi [6.7K]

Answer:

c) 100

Step-by-step explanation:

This is the best choice because the number is not too low or too high. He will get an accurate probability.

5 0
3 years ago
Help anyone can help me do this question,I will mark brainlest.​
astraxan [27]

d =√((x_2-x_1)²+(y_2-y_1)²)

This is the formula of distance between

So, I hope u will get all answer of the questions by using this formula...

Thanks...

8 0
2 years ago
Other questions:
  • kayla has saved up 147 and she sells movies for .18 each and needs to get to 750 , how many movies does she need to sell to get
    9·1 answer
  • What is the area of a triangle that has a base of 3 feet and a height of 6 feet?
    10·1 answer
  • 5.Solve the system using substitution.
    9·1 answer
  • How to know if a function is increasing or decreasing
    5·1 answer
  • Circle A has center of (4, 6) and a radius of 5, and circle B has a center of (1, 0) and a radius of 15.What steps will help sho
    7·2 answers
  • Which system of equations is represented by the graph?
    10·1 answer
  • 6 fl oz= how many cups
    5·2 answers
  • Evaluate: Four To The Third Power write the numerical answer only
    8·1 answer
  • Please helppp me anyone​
    8·1 answer
  • Aba's dog was 5 1/2 inches tall when it was a puppy but is now 14 inches tall. Aba's dog grew n-inches.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!