Question

1)Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ. Round your answer to the nearest hundredth unless otherwise noted. n = 1042, p = 0.80

2)Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ. Round your answer to the nearest hundredth unless otherwise noted. n = 237, p = 1/4

3)Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ. Round your answer to the nearest hundredth unless otherwise noted. n = 287, p = 0.200 Round your answers to the nearest thousandth.

4)Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ. Round your answer to the nearest hundredth unless otherwise noted. n = 2112, p = 3/4

5)Determine if the outcome is unusual. Consider as unusual any result that differs from the mean by more than 2 standard deviations. That is, unusual values are either less than μ - 2σ or greater than μ + 2σ. A survey for brand recognition is done and it is determined that 68% of consumers have heard of Dull Computer Company. A survey of 800 randomly selected consumers is to be conducted. For such groups of 800, would it be unusual to get 530 consumers who recognize the Dull Computer Company name? A. Yes B. No

Answer 1

Answer:

1)

Minimum and Maximum

(1040.4,1043.6)

Round off answer

(1000,1000)

2)

Minimum and Maximum

(236.5,237.5)

Round off answer

(200,200)

3)

Minimum and Maximum

(286.6,287.4)

Round off answer

(0,0)

4)

Minimum and Maximum

(2110.5,2113.5)

Round off answer

(2100,2100)

5)

No it would not be unusual

Step-by-step explanation:

The Eqaution are as Minimun = (x-2y) and Maximum = (x+2y)

Where X stands for n and Y stands for p

For 1)

if we use the equation

Minimun = 1042-2×0.80

Minimun = 1040.4

for maximum

Maximum = 1042+2×0.80

Maximum = 1043.6

Now for round off we look for nearest hundered , the value like 43 or less than 50 like 49 from 1 fall into nearest hundered 000 while the value which are 50 or greater than 50 falls into 100 .

So that the round off values of minimun and maximum are  

(1000,1000)

For question 2 , 3 and 4 follow the same pattern as question 1.

For 5)

The answer is No because if we caculate the number of consumers which have heard about the dull computer than the answer will be clearify

Now the 68% knows about the dull computer

if we calculate the 68% of 800 it will be 544.

=800×68/100

=544

which is a bigger number than 530 so that there is a good possibility that the consumer will know about dull computers.