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Ainat [17]
3 years ago
15

Help me please points and crown

Mathematics
2 answers:
frozen [14]3 years ago
7 0
B. 1:100

Because one meter is equal to 100 centimeters
Alexxx [7]3 years ago
7 0
It would be 3:100 because like 100 centimeter is 1 meter
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write a real world problem in which you need to find the volume of a right rectangular prism. solve your problem
Afina-wow [57]

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Find the sum of the series

∑(4x−5)

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answer is 77

Step-by-step explanation:

3 0
3 years ago
Help plsssssss!!! i have a timer on me
Bingel [31]

Answer:

the first one

/10/ is the absolute number so it's supposed to represent 10

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Suppose a sample of 100 families of four vacationing at Niagara Falls resulted in sample mean of $282.45 spent per day and a sam
Juli2301 [7.4K]

Given Information:

Mean = μ = $282.45

Standard deviation = σ = $64.50

Sample size = n = 100

Confidence level = 95%

Required Information:  

95% Confidence interval = ?

Answer:

95% Confidence interval = ($269.81, $295.09)

Step-by-step explanation:

We are given a Normal Distribution, which is a continuous probability distribution and is symmetrical around the mean. The shape of this distribution is like a bell curve and most of the data is clustered around the mean. The area under this bell shaped curve represents the probability.

What is Confidence Interval?

The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.  

The confidence interval is given by

CI = \bar{x} \pm MoE\\

Where \bar{x} is the mean and MoE is the margin of error given by

MoE = z_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\

Where σ is the standard deviation, n is the sample size and z_{\alpha/2} is the z-score corresponding to 95% confidence level.

z_{\alpha/2} = 1 - 0.95 = 0.05/2 = 0.025\\\\z_{0.025} = 1.96

MoE = 1.96\cdot \frac{64.50}{\sqrt{100} } \\\\MoE = 1.96\cdot 6.45\\\\MoE = 12.64\\

Finally, the confidence interval is

CI = \bar{x} \pm MoE\\\\CI = 282.45 \pm 12.64\\\\CI = 282.45 - 12.64 \: and \: 282.45 + 12.64\\\\CI = \$269.81 \: and \:\:\$295.09\\

Therefore, we are 95% sure that the true population mean amount spent per day by a family of four visiting Niagara Falls is within the interval of ($269.81, $295.09)

3 0
3 years ago
Please anyone can you guys help me it would mean the world
lapo4ka [179]
It says 404 not found. :(

4 0
3 years ago
Twelve more than the product of a number and 5 is 52
antoniya [11.8K]
Let the unknown number be y.
We can list the equation out by the clues given.
5y + 12 = 52
Then solve this as simple algebra!
Shift +12 to the other side and be - 12
5y = 52-12
5y = 40
Shift x5 to the other side and be ÷5
y = 40 / 5
y = 8
Therfore the unknown number is 8.
7 0
3 years ago
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