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Katarina [22]
3 years ago
8

A study was done on the batting averages for two baseball players: Hitmore and Bunter. Data were collected over a period of time

for baseball parks that are natural and artificial turf. It was found that Hitmore does better overall (.e., has a better batting average). However, for both natural and artificial turf separately, Bunter does better. Which of the following is correct?
This is an example of a negative association between variables.
This is an example of Simpson's Paradox.
"Turf" is a lurking variable in this example
Both (B) and (C) are correct
This situation is mathematically impossible
Mathematics
1 answer:
amm18123 years ago
4 0

Answer:

Both (B) and (C) are correct

Step-by-step explanation:

Explaining in simple terms, The Simpson's paradox simply describes a phenomenon which occurs when observable trends in a relationship, which are obvious during singular evaluation of the variables disappears when each of this relationships are combined. This is what played out when hitmire appears to d well on both of natyraknamd artificial turf when separately compared, but isn't the same when the turf data was combined. Also, performance may actually not be related to the turf as turf may Just be. a lurking variable causing a spurious association in performance.

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4. A food company is concerned that its 16-ounce can of sliced pears is being overfilled. The quality-control department took a
Vinvika [58]

Answer:

The mean weight is not greater than 16 ounces

Step-by-step explanation:

Null hypothesis: Mean weight is greater than 16 ounces

Alternate hypothesis: Mean weight is not greater than 16 ounces.

Sample mean= 16.04 ounces

Assumed mean= 16 ounces

Significance level = 0.05

Sample standard deviation = 0.08 ounces

Number of samples= 35

To test the claim about the mean, Z = (sample mean - assumed mean) ÷ (standard deviation÷ √number of samples)

Z = (16.04 - 16) ÷ (0.08 ÷ √35)

Z = 0.04 ÷ (0.08 ÷ 5.92)

Z= 0.04 ÷ 0.014 = 2.86

Z = 2.86

It is a one-tailed test, the critical region is an area of 0.05 (the significance level). The critical value of the critical region is 1.64

Since the computed Z 2.86 is greater than the critical value 1.64, the null hypothesis is rejected.

Conclusion

The mean weight is not greater than 16 ounces

8 0
3 years ago
What conic section is this 4x^2 +9y^2 =81?
Contact [7]
This follows the base equation of a circle:

(x - h)^2 + (y - k)^2 = r^2

both of the variables are squared, and they're being added--you've got a circle.
3 0
4 years ago
Which fraction is equivalent to -3/2
Alchen [17]

Answer:

It is -1 with 1/2.

Step-by-step explanation:

8 0
3 years ago
The general term for the sequence 3/4,6/5,9/6,12/7,15/8
Ronch [10]

Answer:

B . \frac{3 n}{n+3}

Step-by-step explanation:

<u>Arithmetic sequence</u>:-

Step1:

Given sequence is \frac{3}{4} ,\frac{6}{5} ,\frac{9}{6} ,\frac{12}{7} ,\frac{15}{8}

Above sequence taking numerator terms

3,6,9,12,15 are in arithmetic progression

First term a= 3 and difference d = 3

now n t h term of given sequence is

t_{n} =a+(n-1)d

now substitute a =3 and d=3

t_{n} = 3+(n-1)3 = 3+3 n-3=3n

Step2:-

Above sequence taking denominator

4,5,6,7,8...

here a=4 and d=1

t_{n} =a+(n-1)d

t_{n} =4+(n-1)1

t_{n}=3+n

Final answer is the general term of given sequence is

t_{n} = \frac{3n}{3+n}

3 0
4 years ago
PLEASE HELP ASAPPP!!!!!
ddd [48]
Uhhh use so carson in
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3 years ago
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