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user100 [1]
2 years ago
6

I’m not sure why the picture didn’t work

Mathematics
1 answer:
lutik1710 [3]2 years ago
6 0

Answer:

4.1

Step-by-step explanation:

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PLEASE HELP!!!
Aleksandr [31]

Answer:

What was the result of civil wars breaking out in countries such as Honduras, Nicaragua, Guatemala, and El Salvador in the 1970s?

increased spread of famine

increased trade with other nations

the rebirth of enslavement

the deaths of many people

Step-by-step explanation:

5 0
3 years ago
A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu
julia-pushkina [17]

By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as  under:

α=(1-0.99)/2=0.005

p=1-0.005=0.995

corresponding z value will be 2.575 for p=0.995 .

Margin of error=z*x/d

where x is mean and d is standard deviation.

M=2.575*2.2/\sqrt{1492}

=0.14

So the lower value will be x-M

=8.8-0.14

=8.66

=8.67 ( after rounding)

The upper value will be x+M

=8.8+0.14

=8.94

Hence the confidence interval will be 8.67 toys and 8.94 toys.

Learn more about z test at brainly.com/question/14453510

#SPJ4

8 0
2 years ago
How do I solve 6=1/2z
ahrayia [7]

Answer:

z=12

Step-by-step explanation:

divide by 1/2 to get the variable z by itself

3 0
3 years ago
A package of 25 wristbands cost $5.25. At this rate, what is the cost of 1 wristband in dollars and cents?
azamat

Answer:

$0.21

Step-by-step explanation:

We can set up a proportion. Say x is the cost of 1 wristband:

\frac{5.25}{25} =\frac{x}{1}

Now, we cross multiply:

25x = 5.25

Solving for x, we see that x = 0.21.

Thus, the answer is $0.21.

6 0
3 years ago
Read 2 more answers
Helppppppppppppppppppppp
egoroff_w [7]

Answer:

a, c

Step-by-step explanation:

Let's start with one of each choice. That'll be 3 * 4 * 3 * 3 * 10 = 1080 pizzas. As for the second one, this time the toppings won't be 10 it will be 10 * 9 * 8 because we have 10, and then 9, and then 8 topping choices. This gives us 1080 * 9 * 8 = 77,760. Hope this helps!

4 0
3 years ago
Read 2 more answers
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