3 years ago

Plssss help this is for a test plsss

Mathematics

1 answer:

KiRa [710]3 years ago

3 0

Answer:

Step-by-step explanation:

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Can someone help please

m_a_m_a [10]

Answer:

2 good scoops

Step-by-step explanation:

I got you I think

3 0

2 years ago

Suppose scores on exams in statistics are normally distributed with an unknown population mean and a population standard deviati

Anna71 [15]

Answer:

( 67.18, 68.82)

Step-by-step explanation:

Let $\mu$ be the true (population) mean of statistics exam scores. We have a large random sample of n = 36 scores with a sample mean (sample mean score) of $\bar{x} = 68$ . We know that the population standard deviation is $\sigma = 3$ . A pivotal quantity is $(\bar{x}-\mu)/(3/\sqrt{36}) = (\bar{x}-\mu)/(3/6) = (68-\mu)/(1/2)$ which is approximately normally distributed and $P(-z_{0.05}\leq(68-\mu)/(1/2)\leq z_{0.05}) = 0.90$ where $-z_{0.05} =-1.6449$ , and so, $P(-1.6449\leq(68-\mu)/(1/2)\leq 1.6449) = 0.90$ . Therefore the 90% confidence interval is (68-(1/2)(1.6449), 68+(1/2)(1.6449)), i.e., ( 67.18, 68.82)

8 0

3 years ago

Write an explicit formula for an the nth<br> term of the sequence 8, 48, 288

ira [324]

Answer:

Step-by-step explanation:

a₁ = 8

a₂ = 48

Common ratio r = a₂/a₁ =6

nth term = a₁rⁿ⁻¹

= 8×6ⁿ⁻¹

5 0

3 years ago

X2+Y2=25

Fofino [41]

$x^{2} + y^{2} =25$ is equation of circle which have radius equal 5 and center in (0,0) point

8 0

3 years ago

49 more than the quotient of an unknown number and 12 is 53. What is the value of the unknown number?

nalin [4]

The unknown number is 48 using the equation: x ÷ 12 +49=53 subtract 49 from both sides and get x ÷ 12 = 4 multiplying by 12 on both side to get rid of the ÷12 and get the final answer of x=48.

6 0

3 years ago

Plssss help this is for a test plsss​

Plssss help this is for a test plsss