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3 years ago

Two events that can happen at the same time are called _______________ events.

Mathematics

1 answer:

11111nata11111 [884]3 years ago

5 0

Answer:

I believe they would be called dependent events

Step-by-step explanation:

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1A technical magazine stated that the mean retail cost of all models of a particular laptop was $600. A random sample of 10 stor

My name is Ann [436]

Answer:

Yes

Step-by-step explanation:

Given,

Population mean Z = 600

Sample mean, µ = 586.50

Size of the sample, n = 10

Standard deviation, σ = 26.77

The testing hypothesis is,

Null hypothesis = µ<600

Alternative hypothesis = µ≥600

The test statistics is the calculated value of Z,

(Z- µ)/(σ/√n)

= (600-586.50)/(26.77/√10)

= (13.5*3.1623)/26.77

= 42.691/26.77

= 1.5947

And at 5% level of significance, the table value of Z = 1.644

Here, calculated Z<Table value of Z, so we accept the null hypothesis.

So, the null hypothesis is accepted. The mean value of the laptop is less than 600.

3 0

3 years ago

6,000 dollars is invested in two different accounts earning 3%and 5% interest. At the end of the year, the two accounts earned 2

nadezda [96]

Hi there

To solve this question
0.03x+0.05 (6000-x)=220
Solve for x to know How much money was invested at 3%
First multiply the values
0.03x+0.05×6000-0.05x=220
0.03x+300-0.05x=220
Second calculate the difference and rearranging the values
0.03x-0.05x=220-300
-0.02x=-80
Divide both sides by-0.02 and divide the values
X=-0.02/-80
x=4000 invested at 3% this is the answer of your question

While the amount invested at 5% is
6000-4000=2000

Good luck!

5 0

3 years ago

company 2 charges 4600$ for the first 550 feet of fence and 29 for each additional feet.find the cost if company 2 completes the

Maru [420]

Answer:

I love you 6.78

Step-by-step explanation:

You have to love yourself

- 5x

-6 x 45

6.78

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3 years ago

What is the volume of the prism?<br> 3 m<br> mº<br> 13 m<br> 13 m

NARA [144]

13 m is the volume of the prism

6 0

3 years ago

Hii i’ll give brainliest please help thanks :)

nadezda [96]

Answer: The median score will remain the same at 91.

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2 years ago