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3 years ago

Help, I have to turn this in tomorrow ... is this correct??

Mathematics

2 answers:

Natali5045456 [20]3 years ago

7 0

Answer: I think so that's what i would put

Step-by-step explanation:

lesya692 [45]3 years ago

3 0

I believe that’s correct :)

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A random generator is used to select an integer from 1 to 3 inclusive. What is the difference between the estimated probability

Assoli18 [71]

Answer:

option no D

Step-by-step explanation:

AS it given that it is a random generator

so it will generate random integers between 1 and 3

possible sample space = {1,2,3}

Total no of out comes = 3

Estimated probability that 3 will occur will be obtained by dividing total no of outcomes with total no of possible events to occur

as the occurrence of event is only 1

Estimated probability = 1 /3 = 0.33333

Now

The experiment is performed

total outcomes = 14

Total no of like able events that 3 occurred = 4

Actual probability = 4 / 14

= 0.2857

Difference between actual and estimated probability is = 0.3333-0.2857

=0.0421

≅0.04

which is option D

4 0

4 years ago

Which table shows a linear function?<br> Will mark brainliest

IRISSAK [1]

Answer:

All of them

Step-by-step explanation:

none of the graphs repeat any numbers on the x

8 0

4 years ago

Read 2 more answers

For 9x+25=88, Deens wrote the situation "I bought some shirts at the store for $9 each and received a $25 discount. My total bil

Sliva [168]

Total bill would be excluding the discount, so Deens has included the discount on the wrong side of the equation.

So: 9X = 88-25
9X=63
63/9=7
therefore Deens bought 7 shirts

7 0

3 years ago

In an examination of purchasing patterns of shoppers, a sample of 16 shoppers revealed that they spent, on average, $54 per hour

Lesechka [4]

Answer:

$54-1.64\frac{21}{\sqrt{16}}=45.39$

$54 +1.64\frac{21}{\sqrt{16}}=62.61$

So on this case the 90% confidence interval would be given by (45.39;62.61)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=54$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=21$ represent the sample standard deviation

n=16 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.90 or 90%, the value of $\alpha=1-0.9=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.05,0,1)".And we see that $z_{\alpha/2}=1.64$

Now we have everything in order to replace into formula (1):

$54-1.64\frac{21}{\sqrt{16}}=45.39$

$54 +1.64\frac{21}{\sqrt{16}}=62.61$

So on this case the 90% confidence interval would be given by (45.39;62.61)

4 0

4 years ago

I’m not trying to fail help please

iren [92.7K]

So you need to put both the equation in the y equals if you have a graphing calculator

Then you compare the two equation

f(x) is an decay and g(x) is growth

For choice one and three, the answer choice doesn't make sense leaving you with two and four as the only ones.

Since f(x) is a decay, it cant be choice four either leaving choice 2 as the final answer

This makes sense because g(x) is a growth

I hope this helps!

4 0

3 years ago