Step-by-step explanation:
To create a simple electromagnet, you'll need a source of electricity, a conductor, and metal. Wrap insulated copper wire tightly around an iron screw or nail before connecting the wire to a battery, and watch as your new electromagnet picks up small metal objects.
Answer:
Step-by-step explanation:
Data given and notation
n=1500 represent the random sample taken
estimated proportion of of chips fail in the first 100 hours
is the value that we want to test
represent the significance level
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Concepts and formulas to use
We need to conduct a hypothesis in order to test the claim that the actual percentage that fail is different from the stated percentage. Find the value of the test statistic.:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statisitc, and the is given by:
(1)
The One-Sample Proportion Test is used to assess whether a population proportion
is significantly different from a hypothesized value
.
Calculate the statistic
Since we have all the info requires we can replace in formula (1) like this:
The answer is 50 minutes.
Explanation: 10*50=500, 1000-500=500
6*50=300, 800-300=500
Answer:

Step-by-step explanation:
1) Solve inside the parentheses.

2) Simplify (0.5 × - 0.6 ) to -0.3.

3) Simplify -0.3 × 0.4 to -0.12.

<em><u>Therefor</u></em><em><u>,</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>-0.12</u></em><em><u> </u></em><em><u>.</u></em>
The answer is 24. To get this answer I divided 135 by 15 to see how many minutes it takes to make each toy. My answer was nine, so I divided 216 by nine and got the answer, 24.