Ask question

Ask question

All categories

3 years ago

5

Keenan worked at an ice cream shop. One day, he counted the first 8

1 answer:

ZanzabumX [31]3 years ago

8 0

Answer:

2

Step-by-step explanation:

correct me if i'm wrong

la la la

You might be interested in

Pls help! I need to know if this is right! 50 points!

Sedaia [141]

Answer: B) (x-1)2+(y+1)2= 25 radius = 5 miles

Step-by-step explanation:

In order to get this answer you see that you are adding a negative to x in the first part then multiplying it by 2. Second, you add y+1 then multiplying it by 2. You get the radius of 25 which equals 5 miles. Look at the graph to also check your answers to the problem.

4 0

4 years ago

Read 2 more answers

5. The superintendent of the local school district claims that the children in her district are brighter, on average, than the g

anygoal [31]

Answer:

We conclude that children in district are brighter, on average, than the general population.

Step-by-step explanation:

We are given the following data set:

105, 109, 115, 112, 124, 115, 103, 110, 125, 99

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1117}{10} = 111.7$

Sum of squares of differences = 642.1

$S.D = \sqrt{\frac{642.1}{49}} = 8.44$

We are given the following in the question:

Population mean, μ = 106

Sample mean, $\bar{x}$ = 111.7

Sample size, n = 10

Alpha, α = 0.05

Sample standard deviation, s = 8.44

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 106\\H_A: \mu > 106$

We use one-tailed(right) t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{111.7 - 106}{\frac{8.44}{\sqrt{10}} } = 2.135$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = 1.833$

Since,

$t_{stat} > t_{critical}$

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

We conclude that children in district are brighter, on average, than the general population.

4 0

3 years ago

Show me 1/3 on a number line

aleksklad [387]

Answer:

A possible number line is shown below.

Step-by-step explanation:

I-----------------I----------------I

0 1/3 1

6 0

3 years ago

Read 2 more answers

You have been offered a job and they would like to know what you would like your annual gross income to be. You know that your l

Hoochie [10]

Divide your lifestyle amount by the percentage:

33,000 / 0.70 = $47,142.86 ( Round the answer as needed.)

3 0

3 years ago

Evaluate the value of the expression<br>4(x+2-5x) when x=2

mart [117]

Answer:

-24

Step-by-step explanation:

plz mark brainlyest

6 0

3 years ago