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Eduardwww [97]
3 years ago
14

The time it takes Natalie to replace x cell phone screens is given by the equation t =

Mathematics
1 answer:
Alexxx [7]3 years ago
6 0

Answer: 25 hours

Step-by-step explanation:

t=1+3x

8 screens

or

x = 8

Replace;

t=1+3(8)

t=1+24

t=25h

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1. How many variables are involved in the chi-square test?
GarryVolchara [31]

The result of the respective questions are:

  • This chi-square test only takes into consideration one variable.
  • The  type of chi-square test this is is a Goodness of Fit
  • df= 3
  • NO

<h3>How many variables are involved in the chi-square test?</h3>

a)

This chi-square test only takes into consideration one variable.

b)

The  type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

c)

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

d)

In conclusion

Parameters

\alpha = 0.05

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.

Read more about Probability

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3 0
2 years ago
Can someone tell me by number which ones are wrong please
trapecia [35]

Answer:idk

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the solution to the system of equations
Leni [432]
When system of equations solved graphically, the solutions are points of interceptions, So here, the solution is the point of interception (0,-5).

Answer (0,-5).
5 0
3 years ago
127X12 <br> I need to know this on paper no calculator for the test!!!!!!
amm1812
The answer is to 12 x 12 is 1,524
3 0
3 years ago
Read 2 more answers
1. June says that there should be a decimal point in the quotient below after the 4. Is she correct? Use number sense to explain
charle [14.2K]

43.94 / 5.2 = 845 is impossible because it would mean that 845 * 5.2 is equal to 43.94 which would be a non sense.

Even if you multiply 84.5 * 5.2 you will still get a bigger result than 43.94 obviously.

The only way this division would make sense, it is if the result is 8.45 so the decimal point should be before the 4 and not after it so June is not correct.

GOod luck :)

7 0
3 years ago
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