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3 years ago

Kayla’s checking account statement is shown to the right how much did Kayla spend and share through May 11 show your work

Mathematics

1 answer:

Aleks04 [339]3 years ago

5 0

Answer:

you are special maybe give all the info required and we can do it.

Step-by-step explanation: you are special get a life

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Joey can mow the lawn in 40 minutes and Pet can mow the lawn in 60 minutes. How long will it take for them to mow the lawn toget

In-s [12.5K]

Answer:

It will take 100 minutes (an hour and 40 mins)

Step-by-step explanation:

Just add 60 and 40 and you will get 100 mins.

6 0

3 years ago

In martin’s class of 20 students, 4 students report that social studies is their favorite class and 75% of the Students report t

Naddika [18.5K]

4/20 students say S.S. is their favorite
75% say PE is their favorite
you need to get them in the same conditions, one is fraction, and one is percent
4/20= ?%    /100 4        __   cross multiply on paper
                            20     100
4x100= 400/20=20
20% say s.s. is their favorite
20% is smaller than 75%
expresson: 4
                  20< 75%

8 0

3 years ago

Read 2 more answers

PLSSSSSS HELP 100 POINTS What is this figure a picture of:

NARA [144]

Answer:

Step-by-step explanation:

Because i found the picture on goo gle and it said tessellation

5 0

2 years ago

Read 2 more answers

Seventy-five percent of the light aircraft that disappear while in flight in a certain country are subsequently discovered. Of t

Elanso [62]

Answer:

0.05 = 5% probability that it will not be discovered

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Has an emergency locator

Event B: Not discovered

Probability of having an emergency locator:

70% of 75%(discovered).

100 - 89 = 11% of 100 - 75 = 25%(not discovered). So

$P(A) = 0.7*0.75 + 0.11*0.25 = 0.5525$

Intersection of events A and B

Having an emergency locator and not discovered, so 11% of 25%

$P(A \cap B) = 0.11*0.25 = 0.0275$

What is the probability that it will not be discovered?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0275}{0.5525} = 0.05$

0.05 = 5% probability that it will not be discovered

5 0

3 years ago

Paul recently purchased Wii Fit. Each day Wii Fit calculates a Wii Fit Age. Over the course of the past week (N = 7 days), his W

evablogger [386]

Answer:

a) [20.366, 31.834]

b) Since, The age of 35 years does not belongs to the calculated interval of 95% confidence interval (i.e [20.366, 31.834]).

Paul's age is significantly different from his Mean Wii Fit Age.

Step-by-step explanation:

Data provided:

Number of days i.e sample size, n = 7

Mean, μ = 26.1

Standard deviation, σ = 6.2

Degrees of freedom, df = n - 1 = 7 - 1 = 6

Confidence level = 95%,

Now,

For Confidence level of 95% , α = 1 - 0.95 = 0.05

$\frac{\alpha}{2}=\frac{0.05}{2}$ = 0.025,

From the t stats table,

tc = t(α/2, df)

tc = t(0.025, 6) = 2.447

Therefore,

Margin of error = $t\times\frac{\sigma}{\sqrt n}$

Margin of error = $2.447\times\frac{6.2}{\sqrt {7}}$

Margin of error = 5.734

Therefore,

The 95% confidence interval = Mean ± Margin of error

The 95% confidence interval = [ (26.1 - 5.734) , (26.1 + 5.734)]

The 95% confidence interval = [20.366, 31.834]

b) Since, The age of 35 years does not belongs to the calculated interval of 95% confidence interval (i.e [20.366, 31.834]).

Therefore, it can be concluded that the Paul's age is significantly different from his Mean Wii Fit Age.

5 0

3 years ago