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padilas [110]
3 years ago
11

A group of parents is planning an end-of-year party for the eighth grade class at Ridgeway

Mathematics
1 answer:
Advocard [28]3 years ago
3 0

Answer:

a

Step-by-step explanation:

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The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.71 millimeters and a standard deviat
Harlamova29_29 [7]

Answer:

The bolts with diameter less than 5.57 millimeters and with diameter greater than 5.85 millimeters should be rejected.

Step-by-step explanation:

We have been given that the diameters of bolts produced in a machine shop are normally distributed with a mean of 5.71 millimeters and a standard deviation of 0.08 millimeters.    

Let us find the sample score that corresponds to z-score of bottom 4%.  

From normal distribution table we got z-score corresponding to bottom 4% is -1.75 and z-score corresponding to top 4% or data above 96% is 1.75.

Upon substituting these values in z-score formula we will get our sample scores (x) as:

z=\frac{x-\mu}{\sigma}

-1.75=\frac{x-5.71}{0.08}

-1.75*0.08=x-5.71

-0.14=x-5.71

-0.14+5.71=x-5.71+5.71

5.57=x

Therefore, the bolts with diameters less than 5.57 millimeters should be rejected.

Now let us find sample score corresponding to z-score of 1.75 as upper limit.

1.75=\frac{x-5.71}{0.08}

1.75*0.08=x-5.71

0.14=x-5.71

0.14+5.71=x-5.71+5.71

5.85=x  

Therefore, the bolts with diameters greater than 5.85 millimeters should be rejected.

7 0
2 years ago
How do you find the interquartile range
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<span>Step 1: Find Q1.Q1 is represented by the left hand edge of the “box” (at the point where the whisker stops). In the above graph, Q1 is approximately at 2.6. ...Step 2: Find Q3. ...
<span>Step 3: Subtract the number you found in step 1 from the number you found in step 3.</span></span>
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2 years ago
To calculate the density of an object,you wpuld?
il63 [147K]
It would be the mass divided by the volume

the equation is d = m/v from what i remember
5 0
2 years ago
What is the solution of the system of equations?<br> y = 3x - 4<br> - 3y = -9x + 12
Mrac [35]

Answer:

infinitely many solutions

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3 years ago
A hockey game is 60 minutes. Colin plays 12 minutes. Which ratio represents Colin’s playing time compared to the total number of
drek231 [11]

Answer:

60 t0 12, or 1:5, or 1/5

Step-by-step explanation:

6 0
3 years ago
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