2 years ago

Points for my peeps yo

Mathematics

2 answers:

JulsSmile [24]2 years ago

5 0

Answer:

u already know homes

Step-by-step explanation:

gracias

Paraphin [41]2 years ago

4 0

Answer:

Thanks!!!

Step-by-step explanation:

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A frying pan has a circumference of 43.96 centimeters What is the radius of the frying pan? Use 3.14 for

LiRa [457]

Answer:

Step-by-step explanation:

43.96 divided by 3.14= 14 (diameter)

14 divided by 3= 7 (radius)

7 0

2 years ago

According to a study conducted by the Gallup Organization, the the proportion of Americans who are afraid to fly is 0.10. A rand

notsponge [240]

Answer: 0.1457

Step-by-step explanation:

Let p be the population proportion.

Given: The proportion of Americans who are afraid to fly is 0.10.

i.e. p= 0.10

Sample size : n= 1100

Sample proportion of Americans who are afraid to fly = $\hat{p}=\dfrac{121}{1100}=0.11$

We assume that the population is normally distributed

Now, the probability that the sample proportion is more than 0.11:

$P(\hat{p}>0.11)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.11-0.10}{\sqrt{\dfrac{0.10(0.90)}{1100}}})\\\\=P(z>\dfrac{0.01}{0.0090453})\ \ \ [\because z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}} ]\\\\=P(z>1.1055)\\\\=1-P(z\leq1.055)\\\\=1-0.8543=0.1457\ \ \ [\text{using z-table}]$