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tensa zangetsu [6.8K]
2 years ago
6

The third grade class collected coins for the week.Class one raised 34.00. Class two raised 45.00 .Class three raised 76.00.How

much did all three classes raise?(rounnd to the nearest tens
Mathematics
2 answers:
ICE Princess25 [194]2 years ago
6 0

Answer:

34+45+76=155 Rounded to the nearest tens, would be  $160.00

Step-by-step explanation:

Troyanec [42]2 years ago
4 0

Answer:

160 well it was 155 but u round up to 160

Step-by-step explanation:

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Variance is: Multiple Choice the average squared deviations about the mean of a distribution of values. an empirically testable
DENIUS [597]

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.

6 0
2 years ago
Find the mode median, mean, and range for each data set.<br><br> PLS HELP!!!
Verdich [7]

Answer:

https://www.calculator.net/mean-median-mode-range-calculator.html

Step-by-step explanation:

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6 0
2 years ago
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Help please math thank you
bija089 [108]

Answer:

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Step-by-step explanation:

4 0
2 years ago
(9.2 x 102) x (7.1 x 104)
gulaghasi [49]

Answer:

692914.56

Step-by-step explanation:

(9.2 x 102)

= 938.4

(7.1 x 104)

= 738.4

938.4 x 738.4

=

692914.56

8 0
3 years ago
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A programmer plans to develop a new software system. In planning for the operating system that he will​ use, he needs to estimat
Contact [7]

Answer:  a. n= 1068

b. n= 164

Step-by-step explanation:

The formula to find the sample size :

n=p(1-p)(\dfrac{z^{*}}{E})^2

, where p=prior population proportion , z* = critical z-value and E = Margin of error.

Here , let p=proportion of computers that use a new operating system.

Given : Confidence level = 95%

i.e. z* = 1.96  [by z-table]

Margin of error : E = 3% =0.03

a. If p is unknown , then we assume p=0.5

Then, n=(0.5)(1-0.5)(\dfrac{1.96}{0.03})^2=1067.11111\approx1068

i.e. n= 1068

b. p=0.96

Then, n=(0.96)(1-0.96)(\dfrac{1.96}{0.03})^2=163.908266667\approx164

i.e. n= 164.

6 0
3 years ago
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