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Juli2301 [7.4K]
3 years ago
10

3 numbers that are less than 2 and greater then -1

Mathematics
1 answer:
Viefleur [7K]3 years ago
4 0

Three numbers less than 2, but greater than -1 are:

  • 0
  • 1
  • 1.5 (I don't know if that counts as a number specifically)


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The pit section is located 8 feet from the base of the platform. If the angle of depression from the band director to the pit se
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Answer: This is how I would do it 8x67=402

Step-by-step explanation:

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2 years ago
Please help, last question ill probably ask on here HELP. Name the pair with the number so ik which one it is for ​
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polet [3.4K]

Answer:

This equation has one solution

Step-by-step explanation:

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6 0
3 years ago
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The mean SAT score in mathematics, M, is 600. The standard deviation of these scores is 48. A special preparation course claims
kupik [55]

Answer:

Step-by-step explanation:

The mean SAT score is \mu=600, we are going to call it \mu since it's the "true" mean

The standard deviation (we are going to call it \sigma) is

\sigma=48

Next they draw a random sample of n=70 students, and they got a mean score (denoted by \bar x) of \bar x=613

The test then boils down to the question if the score of 613 obtained by the students in the sample is statistically bigger that the "true" mean of 600.

- So the Null Hypothesis H_0:\bar x \geq \mu

- The alternative would be then the opposite H_0:\bar x < \mu

The test statistic for this type of test takes the form

t=\frac{| \mu -\bar x |} {\sigma/\sqrt{n}}

and this test statistic follows a normal distribution. This last part is quite important because it will tell us where to look for the critical value. The problem ask for a 0.05 significance level. Looking at the normal distribution table, the critical value that leaves .05% in the upper tail is 1.645.

With this we can then replace the values in the test statistic and compare it to the critical value of 1.645.

t=\frac{| \mu -\bar x |} {\sigma/\sqrt{n}}\\\\= \frac{| 600-613 |}{48/\sqrt(70}}\\\\= \frac{| 13 |}{48/8.367}\\\\= \frac{| 13 |}{5.737}\\\\=2.266\\

<h3>since 2.266>1.645 we  can reject the null hypothesis.</h3>
6 0
3 years ago
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Tim Worker expects Social Security benefits of $937 per month. His wife, Mary, is eligible for a wife's benefit of 50 percent of
Anestetic [448]
Hi there

Mary receive
937×0.5
=468.5

Hope it helps
3 0
3 years ago
Read 2 more answers
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