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777dan777 [17]
3 years ago
13

Carla has a bookcase with 4 shelves.she puts 6 bears in a row on each shelf. How many bears does she have? Draw a picture and wr

ite an equation to solve
Mathematics
1 answer:
N76 [4]3 years ago
3 0
How does a bear fit on a shelf?
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In Exercises 1–4, use these results from a USA Today survey in which 510 people chose to respond to this question that was poste
Alexus [3.1K]

Answer:

The proportion of the population believes that passwords should be replaced with biometric security is not more than 50%.

Step-by-step explanation:

In this case we need to test the claim that more than half of the population believes that passwords should be replaced with biometric security.

Assume that the significance level of the test is, <em>α</em> = 0.05.

The hypothesis can be defined as follows:  

<em>H</em>₀: The proportion of the population believes that passwords should be replaced with biometric security is 50%, i.e. <em>p</em> = 0.50.  

<em>Hₐ</em>: The proportion of the population believes that passwords should be replaced with biometric security is more than 50%, i.e. <em>p</em> > 0.50.  

The information provided is:

n = 510\\\hat p=0.53

Compute the test statistic value as follows:

 z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}

    =\frac{0.53-0.50}{\sqrt{\frac{0.50(1-0.50)}{510}}}\\\\=1.354991\\\\\approx 1.35

The test statistic value is 1.35.

The decision rule is:

The null hypothesis will be rejected if the p-value of the test is less than the significance level.

Compute the p-value as follows:

 p-value=P(Z>1.35)

                 =1-P(Z

<em>p</em>-value = 0.088 > <em>α</em> = 0.05.

The null hypothesis will not be rejected at 5% significance level.

Thus, there is not enough evidence to support the claim.

Conclusion:

The proportion of the population believes that passwords should be replaced with biometric security is not more than 50%.

7 0
3 years ago
Find the missing side <br> Find x and y
blagie [28]

Answer:

x=7.5 y y=12.99

Step-by-step explanation:

i will try again if this is wrong

8 0
3 years ago
Solve for q.<br><br> 20 − 3q = 5q − 20
galina1969 [7]

Answer:

q = 5

Step-by-step explanation:

40 - 3q = 5q

40 = 8q

5 = q

7 0
3 years ago
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A $1170 washing machine in a laundromat is depreciated for tax purposes at a rate of $90 per year. Find a function for the depre
yanalaym [24]

Answer:

there is no function

Step-by-step explanation:

4 0
3 years ago
Quadrilateral QRST is similar to quadrilateral EDGF. What's the scale factor from EDGF to QRST? Question 15 options: A) 5∕6 B) 6
Leno4ka [110]
Is there any picture?
6 0
3 years ago
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