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Alex777 [14]
3 years ago
12

) A random sample of n measurements was selected from a population with unknown mean μ and standard deviation σ. Calculate a 95%

confidence interval for μ for the following situation:
n=20, x¯¯¯=63.8, s=2.84
≤μ≤
Mathematics
1 answer:
UNO [17]3 years ago
4 0

Answer:

ask MisterBrainly for help

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Which values from the set {2, 4, 6, 8, 10) make the inequality n +5 > 10 true?
tankabanditka [31]

Answer:

6, 8, 10

Step-by-step explanation:

First, solve the inequality

To do this, we need to get n by itself

n +5 > 10

5 is being added to n. To undo this, subtract 5 from both sides, since subtraction is the opposite of addition. This will eliminate the 5 on the left side, and leave n by itself.

n+5-5 > 10-5

n > 5

So, any number greater than 5 is a solution, and will make the inequality true.

The numbers in the set that are greater than 5 are 6, 8, and 10

To test that these numbers do make the inequality true, substitute each value in for n

n +5 > 10

6+5 > 10

11 > 10

True

n +5 > 10

8+5>10

13>10

True

n +5 > 10

10+5> 10

15>10

True

5 0
3 years ago
Find the value of the expression 0.5^10/0.5^7
SIZIF [17.4K]

Answer:

The solution is:

  • \frac{0.5^{10}}{0.5^7}=0.125

Step-by-step explanation:

Given the expression

0.5^{10}\div 0.5^7

Solving

\frac{0.5^{10}}{0.5^7}

\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}

so

\frac{0.5^{10}}{0.5^7}=0.5^{10-7}

\mathrm{Subtract\:the\:numbers:}\:10-7=3

=0.5^3

=0.125        ∵ 0.5^3=0.125

Therefore, the solution is:

\frac{0.5^{10}}{0.5^7}=0.125

7 0
3 years ago
Tom is at McDonalds and he sees that 2 burgers cost $40. He needs 12 burgers. How mu ch will 12 burgers cost?
Debora [2.8K]
240 dollars 20 dollars per burger

those are expensive burgers
5 0
3 years ago
Read 2 more answers
Find the probability that the sum is as stated when a pair of dice is rolled. (enter your answers as fractions.) (a) odd and les
Dmitry_Shevchenko [17]
|Ω| = 6 - number of all results
A = {1, 3} → |A| = 2 - number of (a) results
P(A) = 2/6 = 1/3

8 0
3 years ago
-22 = 6x + 4<br> Hehehhe I need help agaaaaiiin
UkoKoshka [18]

Hey there!

Answer:\boxed{x=\frac{-13}{3}}

Explanation:

-22=6x+4

Let's start off with flipping the equation.

6x+4=-22

Now we need to subtract 4 from both sides of the equation.

6x+4-4=-22-4\\6x=-26

Now in our third/last step, we will divide both sides by 6.

\frac{6x}{6}=\frac{-26}{6}

x=\frac{-13}{3}

\boxed{x=\frac{-13}{3}}\text{ is the answer.}

Hope this helps!

\text{-TestedHyperr}

3 0
3 years ago
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