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Harrizon [31]
3 years ago
14

1) a yogurt shop has vanilla chocolate and strawberry blueberry and raspberry flavors served in small medium or large cups. How

many different yogurt choices are possible.
a)30 b)15 c)8 d)2

2) mr.Jefferson has 20 students in his class he wants to send 4 of these students to pick up books for the class how many combinations of 4 students can he choose
a)80 b)5 c)4845 d)116,280

3)here is there sample spaces for three tossed of a coin (hhh,hht,hth,htt,thh,tht,tth,ttt)
a)0.25 b)0.375 c)0.125 d)0.333

4) the table shows the results of a spinning spinner several times what is the experimental probability of spinning a c or a d
a)4/5 b)1/48 c)2/5 d)1/3

5)a bag contains 8 black marbles 16 white marbles 14 red marbles and ten green marbles a marble is drawn at random from the bag what is the probability that the marble drawn will not be white
a)1/3 b)2/3 c)3/4 d)15/16
Mathematics
1 answer:
sergey [27]3 years ago
3 0
1 a 2c 3b 4a 5d hoooooooooppppppppeeeee thiiss hellps

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Answer:

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2564.0 millimeters tall. If the boards are too long they must be trimmed, and if the boards are too short they cannot be used. A
Leokris [45]

Answer:

We conclude that the board's length is equal to 2564.0 millimeters.

Step-by-step explanation:

We are given that a sample of 26 is made, and it is found that they have a mean of 2559.5 millimeters with a standard deviation of 15.0.

Let \mu = <u><em>population mean length of the board</em></u>.

So, Null Hypothesis, H_0 : \mu = 2564.0 millimeters    {means that the board's length is equal to 2564.0 millimeters}

Alternate Hypothesis, H_A : \mu \neq 2564.0 millimeters      {means that the boards are either too long or too short}

The test statistics that will be used here is <u>One-sample t-test statistics</u> because we don't know about the population standard deviation;

                             T.S.  =  \frac{\bar X-\mu}{\frac{s }{\sqrt{n}} }  ~  t_n_-_1

where, \bar X = sample mean length of boards = 2559.5 millimeters

            s = sample standard deviation = 15.0 millimeters

             n = sample of boards = 26

So, <em><u>the test statistics</u></em> =  \frac{2559.5-2564.0}{\frac{15.0 }{\sqrt{26}} }  ~   t_2_5

                                     =  -1.529    

The value of t-test statistics is -1.529.

Now, at a 0.05 level of significance, the t table gives a critical value of -2.06 and 2.06 at 25 degrees of freedom for the two-tailed test.

Since the value of our test statistics lies within the range of critical values of t, so <u><em>we have insufficient evidence to reject our null hypothesis</em></u> as it will not fall in the rejection region.

Therefore, we conclude that the board's length is equal to 2564.0 millimeters.

4 0
4 years ago
A school assembly had 90 students in attendance, and 80% of them were first-graders. How many first-graders were at the assembly
Sav [38]

the answer is 72! Hope this helps! :)

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Gala2k [10]
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Find the equation for the line that passes through (4, - 8) that has slope - 2. Give your answer in
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We are given all of that information:

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this is the equation in point-slope form

Hope this helps!

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