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3 years ago

Help me on number four and six please

Mathematics

1 answer:

oee [108]3 years ago

3 0

For number six it's D

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HELP!! i will give brainliest!!

AfilCa [17]

22 kilometers :) hope that helped

3 0

3 years ago

Suppose that we are testing a coin to see if it is fair, so our hypotheses are: H0: p = 0.5 vs Ha: p ≠ 0.5. In each of (a) and (

aleksley [76]

Answer:

$H_0: p = 0.5\\H_a: p \neq 0.5$

a. We get 56 heads out of 100 tosses.

We will use one sample proportion test

x = 56

n = 100

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{56}{100}$

$\widehat{p}=0.56$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{100}}}$

= $1.2$

refer the z table for p value

p value = 0.8849

a. We get 560 heads out of 1000 tosses.

We will use one sample proportion test

x = 560

n = 1000

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{560}{1000}$

$\widehat{p}=0.56$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}$

= $3.794$

refer the z table for p value

p value = .000148

p value of part B is less than Part A because part B have 10 times the number the tosses.

6 0

2 years ago

Whole number between 1 and 10, and then write its reciprocal.

Natasha_Volkova [10]

Answer:

reciprocal: 1/2

brainliest accepted!!!;)

3 0

3 years ago

John was getting rid of some things so he sold his golf club for $40 and he originally bought it for $75. What is the percent of

alina1380 [7]

First work out the difference:
75-40 = 30
30/75 * 100 = 40% decrease.
Please mark as brainliest

6 0

3 years ago

What is the union of the set (1, 4, 6, 8 1/2,10) and (1, 3, 11/2, 6, 10 1/2)

makkiz [27]

Answer:

$(1, 4, 6, 8, \frac{1}{2}, 10, 3, \frac{11}{2})$

Step-by-step explanation:

We need to find union of given sets $(1, 4, 6, \frac{1}{2}, 10)$ and $(1, 3, \frac{11}{2}, 10, \frac{1}{2})$

We know by definition that union of two given sets say A and B is set C with all the unique and common values given in set A and B.

∴ $(1, 4, 6, \frac{1}{2}, 10)$ ∪ $(1, 3, \frac{11}{2}, 10, \frac{1}{2})$ = $(1, 4, 6, 8, \frac{1}{2}, 10, 3, \frac{11}{2})$

4 0

3 years ago