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gizmo_the_mogwai [7]
3 years ago
9

It takes one examiner 40 hours to mark 100 exam papers.

Mathematics
1 answer:
krok68 [10]3 years ago
3 0

Answer:

10

Step-by-step explanation:

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What’s the answer to this problem 5 yards 2 feet multiply by 2 ?
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Answer:

10 yards and 4 feet

Step-by-step explanation: multiply 5x2 then 2x2

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3 years ago
Your questions are:
Phantasy [73]

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Step-by-step explanation:

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4 years ago
A UW Madison professor is interested in learning about the variance of grades for university students. The professor gathers the
Andru [333]

Answer:

A) H0 : μ = 100  

   H1 :  μ < 100

B)  39.2

C)  We fail to reject null hypothesis

D) If the professor increases the sample size the value of the test statistic will increase .

Step-by-step explanation:

sample variance ( s ) = 80

sample size = 50

At ∝ = 0.01  population variance ( σ )   < 100

<u>a) Hypothesis </u>

H0 : μ = 100  ( Null hypothesis )

H1 :  μ < 100  ( Alternate hypothesis )

<u>b) Determine The correct test statistic </u>

x^2 = ( n-1 ) * s^2/σ^2

      = ( 49 ) * 80^2 / 100^2

      = 39.2

<u>C) Determine the conclusion of the test</u>

The P-value = 0.1596  ( calculated )

The conclusion of the test is that we fail to reject null hypothesis given that

P-value ( 0.1596 ) > ∝ ( 0.01 )  

D) If the professor increases the sample size the value of the test statistic will increase .

6 0
3 years ago
Factorise fully 28y2 – 24y
Fittoniya [83]

Answer:

4y(7y - 6)

Step-by-step explanation:

4 0
3 years ago
1. Repartir $ 264 en forma inversamente proporcional al número de atrasos de los trabajadores de una cafetería, Juan 2 atrasos,
nlexa [21]

Explanation:

Here's the clearer rendering of the text;

1. Distribute $ 264 inversely proportional to the number of arrears of the workers of a cafeteria, Juan 2 arrears, Pedro 3 arrears and José 6 arrears. Underline the intermediate value. A) 44 b) 88 c) 264 d) 132 e) 70

2. Distribute 594 points inversely proportional to the errors of each player. Angel 2 errors, Mateo 3 errors, María 6 errors and Antonio 10 errors. Point out the highest number of points delivered. A) 270 b) 180 c) 90 d) 54 e) 18

3. Divide 867 inversely proportionally the calls for attention Juan 3 calls for attention, Andrés 4 calls for attention and Santiago 8 calls for attention. Underline the lowest value. A) 408 b) 102 c) 153 d) 204 e) 255

6 0
3 years ago
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