Answer:
Step-by-step explanation:
- The Z-score allows you to decide if your sample is different from the population mean. In order to use z, you must know four things:
- The population mean.
- The population standard deviation.
- The sample mean.
- The sample size.
- Usually in stats, you don’t know anything about a population, so instead of a Z score you use a T-Test with a T Statistic.
- The major difference between using a Z score and a T statistic is that you have to estimate the population standard deviation. The T test is also used if you have a small sample size (less than 30).
Answer:
to the first one the answer is 0. To the number 2 the answer is 2
Answer:
90 lb/1 x 0.45 = 40.5
Step-by-step explanation:
To convert pounds to kilograms you would have to multiply the pounds by 0.45. So you have to multiply 90 by 0.45.
Answer:
15 + x (Guess)
Step-by-step explanation:
Simply ignore the x, and do 8 + 5.
Then, do 15 + x.
Answer:2/20 =
2 ÷ 20 =
0.1 =
0.1 × 100/100 =
0.1 × 100% =
Step-by-step explanation:
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