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3 years ago

Can someone help me solve this ... please

Mathematics

1 answer:

lana66690 [7]3 years ago

4 0

Answer:

t>28

Step-by-step explanation:

work is shown and pictured

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Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the dif

Orlov [11]

Answer:

n= p1+q1×p2 4pq

n= q2÷ 0.5= q4.5

5 0

2 years ago

A recently admitted class of graduate students at a large state university has a mean GRE verbal score of 650 with a standard de

hjlf

Answer:

The answer is below

Step-by-step explanation:

The z score is a score used to determine the number of standard deviations by which the raw score is above or below the mean, it is given by the equation:

$z=\frac{x-\mu}{\sigma} \\\\\mu=mean, \sigma=standard\ deviation,x=raw\ score\\\\for\ a\ sample\ n:\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }$

Given that μ = 650, σ = 50. To find the probability that 5 students who have a mean of 490, we use:

$z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{490-650}{50/\sqrt{5} } =-7.16$

From the normal distribution table, P(x < 490) = P(Z < -7.16) = 0.0001 = 0.01%

Since only a small percentage of people score about 490, hence the local newspaper editor should write a scathing editorial about favoritism

4 0

3 years ago

gladu [14]

Answer:

Hope this is correct

5 0

2 years ago

Solve the equation 6/5y-10=-4<br> X=

defon

6/5y-10=-4

move -10 to the other side

sign changes from -10 to 10

6/5y-10+10= -4+10

6/5y= 6

Mutiply by 5/6 for both sides

6/5(5/6)y=6(5/6)

Cross out 6/5 and 5/6 , divide by 5 and 6 then becomes y

Cross out 5 and 6 on the right side

x= 5

Answer : x= 5

3 0

3 years ago

Simplify 8^x/4^y x 2^z

Lera25 [3.4K]

Answer:

The answer is 8x.

Step-by-step explanation:

It is 8x.

EXCEPT,

Is it $2^{z}$ or $2^{2}$

If it is $2^{z}$ then the answer is $\frac{2^{3x+z} }{4}$

PLEASE MARK BRAINLIEST

4 0

2 years ago