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marshall27 [118]
3 years ago
7

Help with number 4 and number 7 please

Mathematics
1 answer:
Kaylis [27]3 years ago
6 0
Answer is in the picture

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The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 60 o
Gala2k [10]

Answer:

Step-by-step explanation:

Given that the Acme Company manufactures widgets, which have a mean of 60 ounces and a standard deviation of 7 ounces

We know that 95% of the area lie between -2 and 2 std deviations from the mean.

i.e. Probability for lying in the middle of 95%

Z score (60+7(-2), 60+7(2))\\=(46, 74)

Between 46 and 74 oz.

b) Between 12 and 57

convert into Z score

(\frac{12-60}{7}

P(-6.86<z<-0.43)

=0.5-0.1664=0.3336

c) X<30 gives Z<-4.83

i.e. P(X<30) =0.00

3 0
3 years ago
45 + 15(n − 1) for n = 6
blondinia [14]

Answer:

120

Step-by-step explanation:

45 + 15 (6 -1)

45 + 15 (5)

45 + 75

120

3 0
3 years ago
Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion. 6.5 yd + 32 in. A
sukhopar [10]
Convert both to either yards or inches and you can just add the numbers. B is the right answer.
7 0
3 years ago
Could you please help?
aleksandr82 [10.1K]
3. 8 tires for 2 cars = 4 tires for every 1 car

4. (8,2) (12,3) (16,4) (20,5) (24,6) (28,7)
                                ↑
                          plot these on the graph
6.  8/2=16/4=12/3=20/5
6 0
3 years ago
55 is 40% of what number
SCORPION-xisa [38]
You simply put 40 over a hundred and 55 over n (which is the number were trying to find)  so you do cross multiplication. 55 times a hundred and after you get the answer. You divide it by 40 and should get 137.5.
3 0
3 years ago
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