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arsen [322]
2 years ago
5

Variance is: Multiple Choice the average squared deviations about the mean of a distribution of values. an empirically testable

statement that is an unproven supposition developed in order to explain certain phenomena. the error made by rejecting the null hypothesis when it is true. a statement that asserts the status quo; that is, any change from what has been thought to be true is due to random sampling order. a statement that is the opposite of the null hypothesis. Next Visit question mapQuestion 4 of 10 Total4 of 10 Prev
Mathematics
1 answer:
DENIUS [597]2 years ago
6 0

Multiple choice answers are clearly defined as below for clarity:

A. the average squared deviations about the mean of a distribution of values.

B. an empirically testable statement that is an unproven supposition developed in order to explain certain phenomena.

C. the error made by rejecting the null hypothesis when it is true.

D. a statement that asserts the status quo; that is, any change from what has been thought to be true is due to random sampling order.

E. a statement that is the opposite of the null hypothesis

Answer:

A. The average squared deviations about the mean of a distribution of values.

Explanation:

A. the average squared deviations about the mean of a distribution of values. Correct

Standard deviation is how data is distributed around the mean. It is also the square root of the Variance. Therefore, the variance is the square of the standard deviation which is distributed around the mean.

B. an empirically testable statement that is an unproven supposition developed in order to explain certain phenomena. Incorrect

This is false as this is rather the definition for hypothesis.

C. the error made by rejecting the null hypothesis when it is true. Incorrect

This is false as this is the definition for the probability of committing a type I error

D. a statement that asserts the status quo; that is, any change from what has been thought to be true is due to random sampling order. Incorrect

This is false as this defines what a null hypothesis is.

E. a statement that is the opposite of the null hypothesis. Incorrect

The opposite of the null hypothesis is alternative hypothesis.

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A summarine is only allowed to change his depth by rising Toward the surface in 50 m stages it starts off at negative 235 m how
Vladimir [108]

Answer:

It will take 5 stages to reach the surface.

Step-by-step explanation:

-225/50=4.5 or what times 4.5 equals -225

Hope this helps.

3 0
2 years ago
There is a population of 15,500 bacteria in a colony. If the number of bacteria doubles every 234 hours, what will
saveliy_v [14]

Answer:

2,48,000

Step-by-step explanation:

  • Initial population of bacteria = 15,500

  • Bacteria doubles after every 234 hours

  • So, after 0 (zero) hours, no of bacteria = 15,500

  • After 234 hours, no. of bacteria = 2(15,500) = 31,000

  • After 468 hours, no. of bacteria = 2(31,000) = 62,000 (2*234 = 468)

  • After 702 hours, no. of bacteria = 2(62,000) = 124,000 (3*234 = 702)

  • After 936 hours, no. of bacteria = 2(124000) = 2,48,000 (4*234 = 936)
3 0
2 years ago
Bryan and Jadyn had barbeque potato chips and soda at a football party. Bryan ate 4 oz of chips and drank 1 cup of soda for a to
Inga [223]

Answer:

1 oz of chips has 140 mg of sodium, and 1 cup of soda has 40 mg of sodium.

Step-by-step explanation:

This question is solved by a system of equations.

I am going to say that:

x is the amount of sodium in 1oz of chips.

y is the amount of sodium in 1 cup of soda.

Bryan ate 4 oz of chips and drank 1 cup of soda for a total of 600mg of sodium.

This means that 4x + y = 600, also y = 600 - 4x

Jadyn ate 1 oz of chips and drank 4 cups of soda for a total of 300mg of sodium.

This means that:

x + 4y = 300

From the first equation, we have that y = 600 - 4x. So

x + 4(600 - 4x) = 300

x + 2400 - 16x = 300

15x = 2100

x = \frac{2100}{15}

x = 140

y = 600 - 4x = 600 - 4*140 = 40

1 oz of chips has 140 mg of sodium, and 1 cup of soda has 40 mg of sodium.

4 0
2 years ago
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3 years ago
How would you write 95 divided by 20?
RoseWind [281]

Answer:95/20

Step-by-step explanation:

7 0
2 years ago
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