1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirill [66]
4 years ago
12

According to Wine-Searcher, wine critics generally use a wine-scoring scale to communicate their opinions on the relative qualit

y of wines. Wine scores range from to , with a score of indicating a great wine, indicating an outstanding wine, indicating a very good wine, indicating a good wine, indicating a mediocre wine, and below indicating that the wine is not recommended. Random ratings of a pinot noir recently produced by a newly established vineyard in follow:
87 91 86 82 72 91
60 77 80 79 83 96

Required:
a. Develop a point estimate of mean wine score for this pinot noir (to decimals).
b. Develop a point estimate of the standard deviation for wine scores received by this pinot noir (to decimals).
Mathematics
1 answer:
Romashka-Z-Leto [24]4 years ago
8 0

Answer:

a

\= x  =  82

b

s =  9.64

Step-by-step explanation:

From the question we are told that

    The data is  87  91  86  82  72  91   60  77  80  79  83  96

Generally the point estimate for the mean is mathematically represented as

    \= x  =  \frac{\sum  x_i }{n}

=>  \= x  =  \frac{87 +91 + 86 + \cdots  + 96}{12}

=>    \= x  =  82

Generally the point estimate for the standard deviation  is mathematically represented as

      s =  \sqrt{\frac{ \sum ( x_i  - \= x )^2 }{ n -1 } }

=>     s =  \sqrt{\frac{ ( 87 - 82  )^2 +( 91 - 82  )^2 + \cdots + ( 96 - 82  )^2  }{ 12 -1 } }

=>     s =  9.64

You might be interested in
If y+ 18=45 what does y equal?
Flauer [41]
You would want to subtract 18 from 45. Your answer would be y=27.
7 0
3 years ago
Read 2 more answers
Pls help will give brainliest to best answer
NNADVOKAT [17]

Answer:

y=250x-4

Step-by-step explanation:

If y represents the amount of money made in a week, y=250.

If x represents the amount of cakes that are made, x=?

You make $250(y) a week, you then spend $4(x) per cake, this would make the equation:

y=250x-4

3 0
3 years ago
Use the domain and range of each of the following relations to determine which is a function.
Taya2010 [7]
B and C (I think they are the same)
7 0
3 years ago
Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours. At this rate of decay,
salantis [7]

Answer:

9,942 bacteria were there at 10 hours.

Step-by-step explanation:

Equation for population decay:

The equation for population decay, after t hours, is given by:

P(t) = P(0)(1-r)^t

In which P(0) is the initial population and r is the decay rate, as a decimal.

Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours.

This means that P(0) = 200000 and that when t = 18, P(t) = 900. So we use this to find r.

P(t) = P(0)(1-r)^t

900 = 200000(1-r)^{18}

(1-r)^{18} = \frac{900}{200000}

\sqrt[18]{(1-r)^{18}} = \sqrt[18]{\frac{900}{200000}}

1 - r = (\frac{900}{200000})^{\frac{1}{18}}

1 - r = 0.7407

So

P(t) = P(0)(1-r)^t

P(t) = 200000(0.7407)^t

At this rate of decay, how many bacteria was there at 10 hours?

This is P(10). So

P(10) = 200000(0.7407)^{10} = 9941.5

Rounding to the nearest whole number:

9,942 bacteria were there at 10 hours.

5 0
3 years ago
0.09 is 10 times as much as
e-lub [12.9K]
0.09 is 10 times as much as 0.009, since it is one decimal place behind 0.09!
Hope I was able to help, if you need any more help, please let me know.
5 0
3 years ago
Read 2 more answers
Other questions:
  • You select a card from a standard shuffled deck of 52 cards. Without replacing, you select another card. Find the probability th
    15·1 answer
  • Please help me with number 2 :)
    7·1 answer
  • 3.14 times 8 to the power of 3 divide by 4/3
    7·1 answer
  • You earn $8 an hour doing cleanups and $12 an hour painting. Last spring and summer, you worked a total of 400 hours and earned
    10·1 answer
  • Remove all perfect squares from inside the inside the square root 63
    15·1 answer
  • Simplify:<br><img src="https://tex.z-dn.net/?f=2%20%5Cfrac%7B1%7D%7B4%7D%283.5%29%20" id="TexFormula1" title="2 \frac{1}{4}(3.5)
    14·1 answer
  • Out of 500 milliliters of hydrochloric acid, 237 milliliters were left after an experiment that used the acid. How much acid was
    11·1 answer
  • Use the coordinate plane to help you identify the length of each leg then use the Pythagorean Theorem to find the length of CD​
    5·1 answer
  • Select the story problem that this equation represents 1/2 / 2/5
    6·1 answer
  • Ronald invirtio algun dinero al 5% y $500 mas que la otrq cantidad al 7%. El interes total anual devengado fue de $215 (Cuanto i
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!