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3 years ago

Science quiz has 12 multiple choice questions with four choices for each find the total number of ways to answer the questions

Mathematics

2 answers:

brilliants [131]3 years ago

6 0

Answer:

Im guessing 48 ways cause 12 x 4 =48

soldier1979 [14.2K]3 years ago

4 0

5 IS THE ANSWER

I HOPE ITS HELP

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An automobile manufacturer has developed a new compact automobile. A random sample of 64 of the new automobiles showed that the

Firdavs [7]

Answer:

The 95% confidence interval for the population mean mileage is

(27.917, 29.593)

The 98% confidence interval for the population mean mileage

(27.737, 29.762)

Step-by-step explanation:

Step(i):-

Given that the random sample size 'n' = 64

Given that the mean of sample x⁻ = 28.75miles

Given that the standard deviation of the sample (S) = 3.4 miles

Degrees of freedom = n-1 = 64-1 =63

t₀.₀₅ = 1.9983

Step(ii):-

95% confidence interval for the population mean mileage is determined by

$(x^{-} - t_{0.05} \frac{S}{\sqrt{n} } , x^{-} + t_{0.05} \frac{S}{\sqrt{n} })$

$(28.75-1.99\frac{3.4}{\sqrt{64} },28.75 + 1.99 \frac{3.4}{\sqrt{64} } )$

(28.75 - 0.845 , 28.75 + 0.845)

(27.917 , 29.593)

Step(iii):-

98% confidence interval for the population mean mileage is determined by

$(x^{-} - t_{0.02} \frac{S}{\sqrt{n} } , x^{-} + t_{0.02} \frac{S}{\sqrt{n} })$

$(28.75-2.3824\frac{3.4}{\sqrt{64} },28.75 + 2.3824 \frac{3.4}{\sqrt{64} } )$

(28.75 - 1.01252 , 28.75 + 1.01252)

(27.737 , 29.762)

Final answer:-

98% confidence interval for the population mean mileage is

(27.737 , 29.762)

7 0

2 years ago

12 more than the difference of half a number and 3 is 45. Plz answer

son4ous [18]

Answer:

x=18

Step-by-step explanation:

the result of 12 added to the difference of half a number and 3 is 45.

that looks something like this

$12+\frac{1}{2}x= 45$

which can be solved as such

$\frac{1}{1} x+(12-3)=45\\\frac{1}{2}x+9=45\\\frac{1}{2}x=45-9\\ \frac{1}{2}x=36\\\frac{2}{1}*\frac{1}{2}x=36*\frac{2}{1} \\ x=36*2\\x=72$

7 0

2 years ago

I GIVE BRAINLY. Which pair of numbers is relatively prime?

I am Lyosha [343]

Answer:

Your answer would be A

Step-by-step explanation:

07 and 21

7 0

3 years ago

Read 2 more answers

10+x=23 Solve for the variable and show your work

Mariana [72]

$10+x=23$

Subtract 10 from both sides

$10 + x = 23$
$-10$ $-10$
------------------
$x=13$

Hope I helped!

4 0

3 years ago

Read 2 more answers

Is 2x^2+y =3x - 1 a function quadratic

erastovalidia [21]

Answer:

Step-by-step explanation: yes because when rewritten in standard form the x term will still be raised to the 2nd power.

5 0

3 years ago

Science quiz has 12 multiple choice questions with four choices for each find the total number of ways to answer the questions￼

Science quiz has 12 multiple choice questions with four choices for each find the total number of ways to answer the questions