Need a answer for that question, please?

Answer:

a) The equation is:

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

b) The 98% confidence interval = (5.62784, 6.37216)

Step-by-step explanation:

a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children. (10 points)

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children. (10 points)

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

Mean = 6 days

Standard deviation = 1.6 days

Number of samples = 100

Z score of 98% confidence interval = 2.326

Confidence interval = 6 ± 2.326 × 1.6/√100

= 6 ± 2.326 × 1.6/10

= 6 ± 0.37216

= 6 - 0.37216

= 5.62784

6 + 0.37216

= 6.37216

Therefore, the 98% confidence interval = (5.62784, 6.37216)

Answer:

42

43

Step-by-step explanation:

that just the answer

Answer:

-1

Step-by-step explanation:

slope = change of y/ change of x

here, 7-1 / -2-4 = 6/-6 = -1

Answer:

slope=1

Step-by-step explanation:

(-2,7), (4,1)

y2-y1=m       1-7   = -6 = 1

x2-x1.          4-(-2)    6

Answer:

I want to say it is the first one and the and the third one

Step-by-step explanation:

Answer:

a, d and e

Step-by-step explanation:

3.5%=3 1/2% of 20

3.5x100=0.035 of 20

3.5+3.5=7 (x2), then 20/2 will be 10

7% of 10

Answer:

The value is  [tex]v = 49.23 \ mph[/tex]

Step-by-step explanation:

From the question we are told that

  The  distance from Jacksonville to Miami is  d  =  382 miles

  The  time it take to travel from Jacksonville to Daytona is  [tex]t_1 = 1 \ hour\ and\ 54\ minutes = 1 + \frac{54}{60} = 1.9 \ hours[/tex]

  The  time it take to travel from Daytona Beach to Fort Pierce is [tex]t_2 = 2\ hours\ and\ 51\ minutes= 2 + \frac{51}{60} = 2.85 \ hours[/tex]

    The  time it take to travel from Fort Pierce to West Palm Beach is  

[tex]t_3 = 1\ hour\ and\ 23\ minutes= 1 + \frac{23}{60} = 1.38 \ hours[/tex]

     The  time it take to travel from West Palm Beach to Miami [tex]t_4 = 1\ hour\ and\ 38\ minutes= 1 + \frac{38}{60} = 1.63 \ hours[/tex]

Generally the average speed is mathematically represented as

      [tex]v = \frac{d}{t_1 + t_2 +t_3 + t_4 }[/tex]

=>   [tex]v = \frac{382}{1.9 + 2.85 +1.38 + 1.63 }[/tex]

=>    [tex]v = 49.23 \ mph[/tex]

Answer:

Rise over run y over x

Step-by-step explanation:

-7 divided by -2

5 divided by 3

These will get you the slope

Answer:

Answer:

900-1200

Step-by-step explanation:

mutpliy by 60

Answer:

y= 1x-2

Step-by-step explanation:

The slope is 1.

The y- intercept is (0,-2)

In the equation

y= 1x-2

Hope this helps!

Answer:

0.09

Step-by-step explanation:

First off, we can write 0.9 as a fraction. Reading this, we would say "nine tenths"; this means the number in fraction form is 9/10.

The word "of" in mathematics means we multiply. Thus when we take 1/10 "of" 9/10, we multiply the two:

1/10(9/10)

To multiply fractions, multiply the numerators and multiply the denominators:

1/10(9/10) = (1*9)/(10*10) = 9/100

Converting this back to a decimal, we read 9/100 as "nine one-hundredths"; this means decimal form is 0.09.

Answer:

C

Step-by-step explanation:

Answer:

x=35 y=17

Step-by-step explanation:

2x+25=3x-10

3x-2x=25+10

x=35

(3x-10)+(5y)=180

(3(35)-10)+(5y)=180

95+5y=180

5y=180-95

y=85/5

y=17

Answer:

Hi there

Your answer is

$42.08

To find the final price of the shoes, we would use the 15% discounted price, $46.75, as 100% and find 10% discount of that.

46.75 = 100%

/10

4.675 = 10%

Now, subtract 10% from the 15% discounted price

46.75 - 4.675 = 42.075$ Round up

$42.08

Answer:

find the final price by subtracting 10% from the sale price of $46.75 which is $4.68 making the final price $42.07

Answer:

96

Step-by-step explanation:

the final value is 96 dollars

Answer:

x = 9

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

That is a fact i think but let me reaserch for that and tomorrow i will give you an answere

Answer:

He was born a slave, circa 1817;

Step-by-step explanation:

Answer:

D - 43°

E - 43°

Step-by-step explanation:

In squares all sides are equal, which means one of these angles are given and neither one leave the square, so 43° would be the degree of each angle inside this square.

:•D

Answer:

341

Step-by-step explanation:

Answer:

341

Step-by-step explanation:

Answer:

-15

Step-by-step explanation:

x= -8   (-8)-7= -15

Answer:

29.00

Step-by-step explanation:

Answer:

I think it's  9/5 > 7/5

Step-by-step explanation:

Well, because 9 has more value than 7. Please don't be mad if I'm wrong.

Answer:

9\5 IS GREATER THAN 7\5

Step-by-step explanation:

WELL IF YOU LOOK YOU WILL SEE NINE IS GREATER THAN 7 EASY MATH HOPE I COULD HELP. PLEAAE MARK BRAINLYIEST

The slope of the line is -13/3

Step-by-step explanation:

Equation for slope- change in y over change in x

-65-(-52)  over  48-45   ... which simplifies to -13  over 3  

... -13/3

Answer:

(19-20)/20 = -.05 or a decrease of 5% (-5%)

Step-by-step explanation:

(final number - initial number) / initial number * 100

Step-by-step explanation:

The circumference of a circle is given by :

C=2πr, r is the radius of the circle

Also, 2r = D, diameter of the circle

⇒ C = πD

If the diameter of a circle is multiplied by 10, it means,

C = π(10)

⇒ C = 10π

Hence, if the diameter of a circle is multiplied by 10, then its circumference becomes 10π.

Answer:

400

Step-by-step explanation:

200 + 25(8)

200 + 200 = 400

Answer:

400

Step-by-step explanation:

25x8+200=200+200=400

Answer:

400,000+30,000

430,000

400,000-30,000

370,000

Step-by-step explanation: