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3 years ago

Sara shaded 2/10 of a piece of grid paper. Derrick shaded 45/100

Mathematics

1 answer:

Simora [160]3 years ago

5 0

Answer:

if your asking who shade more then Derrick did

Step-by-step explanation:

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A random sample of 38 wheel chair users were asked whether they preferred cushion type A or B, and 28 of them preferred type A w

-BARSIC- [3]

Answer:

The statement that cushion A is twice as popular as cushion B cannot be verified

Step-by-step explanation:

From the question we are told that:

Sample size n=38

Type a size A $X_a=28$

Type a size B $X_b=10$

Generally the probability of choosing cushion A P(a) is mathematically given by

$P(a)=\frac{28}{38}$

$P(a)=0.73$

Generally the equation for A to be twice as popular as B is mathematically given by

$P(b)+2P(b)=3P$

Therefore Hypothesis

$Null H_0: p \leq \frac{2P}{3P} \\Altenative H_A:p>\frac{2P}{3P}$

Generally the equation normal approx of p value is mathematically given by

$z=\frac{x-np_0-0.5}{\sqrt{np_0(1-p_0)} }$

$z=\frac{28-(38*2/3)_0-0.5}{\sqrt{38*2/3*1/3} }$

$z=0.75$

Therefore from distribution table

$Pvalue=1-\theta (0.75)$

$Pvalue=0.227$

Therefore there is no sufficient evidence to disagree with the Null hypothesis $H_0$

Therefore the statement that cushion A is twice as popular as cushion B cannot be verified

7 0

3 years ago

Which expression is not equal to the number 0? Group of answer choices 5 - 5 -8 - (-8) 6 - (-6) -7 + 7

Sedbober [7]

6 - (-6)
This is because two negatives make a positive, so you’ll be adding 6+6 which equals to 12 not 0

3 0

3 years ago

8. What would be the area of a trapezoid whose bases are 6 m and 14 m with a height of 4 m? *

Korolek [52]

A=40m

A=a+b
2h=6+14
2·4=40m²

8 0

3 years ago

Write the percent as a mixed number in simplest form.<br> 168%

vladimir2022 [97]

Answer:

1 and 17/25

Step-by-step explanation:

First, you make it into a fraction. So because percents are out of 100, it would be 168/100. Then, you take 100 out of it to get a mixed number, 1 and 68/100, and then simplify 68/100 by dividing both sides by the greatest common factor, which is 4. 68/100÷4=17/25. The answer would be 1 and 17/25.

(hope this helps :P)

4 0

3 years ago

At the beach, Nardia collected triple the number of seashells that Pierre did. Together, they collected 52 seashells. Which equa

Whitepunk [10]

Answer:

p=number of seashells pierre collected

p+3p=52

4p=52

p=13

13 seashells

6 0

3 years ago

Read 2 more answers