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Vadim26 [7]
3 years ago
15

Does anyone know how to get a tutor? the option isn’t their for me anymore

Mathematics
1 answer:
MatroZZZ [7]3 years ago
8 0
What do you need help on I can do any subject
You might be interested in
The mean cost of a five pound bag of shrimp is 50 dollars with a variance of 64. If a sample of 43 bags of shrimp is randomly se
anyanavicka [17]

Answer:

0.4122 = 41.22% probability that the sample mean would differ from the true mean by greater than 1 dollar

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation(which is the square root of the variance) \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 50, \sigma = \sqrt{64} = 8, n = 43, s = \frac{8}{\sqrt{43}} = 1.22

What is the probability that the sample mean would differ from the true mean by greater than 1 dollar?

Either it differs by 1 dollar or less, or it differs by more than one dollar. The sum of the probabilities of these events is decimal 1.

Probability it differs by 1 dollar or less:

pvalue of Z when X = 50+1 = 51 subtracted by the pvalue of Z when X = 50 - 1 = 49.

X = 51

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{51-50}{1.22}

Z = 0.82

Z = 0.82 has a pvalue of 0.7939

X = 49

Z = \frac{X - \mu}{s}

Z = \frac{49-50}{1.22}

Z = -0.82

Z = -0.82 has a pvalue of 0.2061

0.7939 - 0.2061 = 0.5878

Probability it differs by more than 1 dollar:

p + 0.5878 = 1

p = 0.4122

0.4122 = 41.22% probability that the sample mean would differ from the true mean by greater than 1 dollar

4 0
3 years ago
If someone can solve this plss
max2010maxim [7]

Answer:

The answer is -33.

Step-by-step explanation:

To solve the given equation we will follow the PEDMAS rule.

PEDMAS stands for :

  • \purple\star P = Parentheses
  • \purple\star E = Exponents
  • \purple\star M = Multiplication
  • \purple\star D = Division
  • \purple\star A = Addition
  • \purple\star S = Subtraction

Solving the question by PEDMAS rule :

\begin{gathered}{\implies{\sf{29 - \bigg\{ - 36 - \Big( - 27 - 31\Big) + 40\bigg\}}}}\end{gathered}

\begin{gathered}{\implies{\sf{29 - \bigg\{ - 36 - \Big( - 58\Big) + 40\bigg\}}}}\end{gathered}

\begin{gathered}{\implies{\sf{29 - \bigg\{ - 36  + 58 + 40\bigg\}}}}\end{gathered}

\begin{gathered}{\implies{\sf{29 - \bigg\{ - 36  + 98\bigg\}}}}\end{gathered}

\begin{gathered}{\implies{\sf{29 - \Big\{  \: 62 \: \Big\}}}}\end{gathered}

\begin{gathered}{\implies{\sf{29 -  62}}}\end{gathered}

\begin{gathered}{\implies{\sf{ - 33}}}\end{gathered}

\begin{gathered}  \star{\underline{\boxed{\sf{\red{ - 33}}}}}\end{gathered}

Hence, the answer is -33.

\rule{300}{2.5}

3 0
2 years ago
Sara wants to find the input value that produces the same output for the functions represented by the tables.
Ipatiy [6.2K]

Answer:

2 is the value that provides the same result with f(x) and g(x).

Step-by-step explanation:

You can solve this by saying:

f(x) = g(x)

and then solving for x.

So let's do it:

f(x) = g(x)\\-0.5x + 2 = 2x - 3\\2x + 0.5x  = 2 + 3\\2.5x = 5\\x = 2

This tells us that when x = 2, the two functions will have identical values.  Let's try them out to confirm it!

f(x) = -0.5x + 2

f(2) = -0.5 * 2 + 2

f(2) = -1 + 2

f(2) = 1

g(x) = 2x - 3

g(2) = 2 * 2 - 3

g(2) = 4 - 3

g(2) = 1

So we can see that 2 is the value that produces the same result in both charts.

6 0
3 years ago
Read 2 more answers
Find the area and perimeter of this shape.
denpristay [2]

Answer:

55

Step-by-step explanation:

since, it is a parallelogram we can find the area easily just by multiplying the base and height

A=bh

A=55m2

4 0
2 years ago
At a sale, a sofa is being sold for 64% of the regular price. The sale price is $592. What is the regular price?
yulyashka [42]

Answer:

925



Step-by-step explanation:

Formula =592 x 100/64 = 925

8 0
3 years ago
Read 2 more answers
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