All categories

2 years ago

The math of the PSAT asks multiple choice asks

Mathematics

1 answer:

ExtremeBDS [4]2 years ago

7 0

Answer:

a.More than 3.4 million high school students (mostly juniors and sophomores) take this nationwide, multiple-choice test every year.

You might be interested in

QUALITY CONTROL1)Specifications for a part for a DVD player state that the part should weigh between 24.6 and 25.6 ounces. The p

Phantasy [73]

Answer:

Step-by-step explanation:

Given that,

μ = 25.1

σ = 0.26

a) since standard deviation is ideal measure of dispersion , a combination of control chart for mean x and standard deviation known as

$\bar x \\\text {and}\\\mu$

Chart is more appropriate than $\bar x$ and R - chart for controlling process average and variability

so we use

$\bar x \\\text {and}\\\mu$ charts

n = 11

we have use 2 σ confidence

so, control unit for $\bar x$ chart are

upper control limit = $\mu +2\times\frac{ \sigma}{\sqrt{n} }$

lower control limit = $\mu -2\times\frac{ \sigma}{\sqrt{n} }$

control limit = μ

μ = 25.1

upper control limit =

$25.1+2\times \frac{0.26}{\sqrt{11} } \\\\=25.2567$

lower control limit =

$25.1-2\times \frac{0.26}{\sqrt{11} } \\\\=24.9432$

Upper control limit and lower control limit are in between the specification limits , that is in between 24.9 and 25.6

so, process is in control

c) if we use 3 sigma limit with n = 11

then

upper control limit = $\mu +3\times\frac{ \sigma}{\sqrt{n} }$

$25.1+3\times\frac{0.26}{\sqrt{11} } \\\\=25.3351$

lower control limit = $\mu -2\times\frac{ \sigma}{\sqrt{n} }$

$25.1-3\times\frac{0.26}{\sqrt{11} } \\\\=24.8648$

control limit is 25.1

Then, process is in control since upper control limit and lower control limit lies between specification limit

So, process is in control

7 0

2 years ago

What is the equation of this line?

Oduvanchick [21]

Answer:

y=4/3x-3

Step-by-step explanation:

+4x-(-3y)=1-1/3

5 0

2 years ago

Which of these procedures is NOT the same as multiplying a whole number by 1,000?

dlinn [17]

Answer:

Step-by-step explanation:

If you add 1,000 to a number 10 times, it will only increase the number by 10,000, not multiply the number by 1,000.

8 0

2 years ago

Your total for dinner was $18.50. If you want to leave a 20% tip, how much will your grand total be?

Finger [1]

Answer:

$3.70 honestly just divide lol

4 0

2 years ago

Eight less than a number

ycow [4]

N-8 or 8-n I would assume

8 0

3 years ago

Read 2 more answers