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4 years ago

Can someone please answer. It's only one question. There is a picture. Thank you!

Mathematics

1 answer:

nata0808 [166]4 years ago

4 0

It is the first answer.

Rolling a number less than 2 or a number greater than 4.

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A blue marlin can swim at speeds of about 50 miles per hour what is that speed in feet per second to the nearest whole number (r

sleet_krkn [62]

Multiply the amount of feet in one mile by the amount of miles in the question(5,280 x 50 = 264,000)

Divide the amount of feet in 50 miles by the amount of minutes in 1 hour to get the amount of feet per mile (264,000 ÷ 60 = 4,400)

Divide the amount of feet per mile to get by the amount of seconds in a minute to get the amount of feet per second (4,400 ÷ 60 = 73.33)

Your answer rounded to the nearest whole number is "73"

4 0

4 years ago

Read 2 more answers

What is the expected number of pets for a student in his class?

lana [24]

Answer:

A) about 1 pet

Step-by-step explanation:

Total the products of number of pets and their probability.

... 0×0.4 +1×0.3 +2×0.25 +3×0.05

... = 0 +0.3 +0.5 +0.15 = 0.95 . . . . . about 1

___

We assume that "3 or more" will be closer to 3 than to 15, a number that would raise the expected value to more than 1.5.

7 0

4 years ago

Shara and her brother have n dollars to spend at the school carnival . They each spend more than 6 dollars . Create an inequalit

allochka39001 [22]

N>6 because they spent over 6 dollars meaning their n amount of money needs to be more than six

8 0

3 years ago

Maria and Jeff collect data on the number of cars that pass through an intersection every Monday morning for 2 months. They reco

timofeeve [1]

You know that’s tuff that’s really tuff that’s literal overdose in words just like I would answer it if you can make it into an equation instead of a word problem

8 0

4 years ago

Read 2 more answers

Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. Thi

Mariana [72]

Answer:

a. Mean: 9.5.

Standard deviation: 2.18.

b. The critical value for signficantly low girl births is 5.14.

The critical value for signficantly high girl births is 13.86.

Step-by-step explanation:

a) If we take a sample of 19 births, all with individual probability of 0.5, we have a random binomial variable with n=19 and p=0.5.

This random variable will have mean and standard deviation calculated as:

$\mu=n\cdot p=19\cdot0.5=9.5\\\\\sigma=\sqrt{np(1-p)}=\sqrt{19\cdot0.5\cdpot0.5}=\sqrt{4.75}=2.18$

b) Range rule of thumb: The standard deviation is approximately a quarter of the range, difference between the maximum and minimum value.

The range rule of thumb tells us that the expected minimum and maximum value are 2 standards deviation below or above, respectively, from the mean.

Then, the extreme expected values are:

$Min=\mu-2\sigma=9.5-2\cdot2.18=9.5-4.36=5.14\\\\Max=\mu+2\sigma=9.5+2\cdot2.18=9.5+4.36=13.86$

The critical value for signficantly low girl births is 5.14.

The critical value for signficantly high girl births is 13.86.

6 0

3 years ago