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Gnom [1K]
3 years ago
10

Jessie's favorite snack mix recipe calls for 7 cups of cereal, 3 cups of peanuts, and 2 cups of raisins. What is the ratio of pe

anuts to the entire snack mix?
Mathematics
1 answer:
UkoKoshka [18]3 years ago
6 0

Answer:

1/4

Step-by-step explanation:

total = 7 cups + 3 cups + 2 cups = 12 cups

3 cups peanuts to 12 cups total

ratio = 3/12 = 1/4

Answer: 1/4

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You believe the population is normally distributed. Find the 80% confidence interval. Enter your answer as an open-interval (i.e
victus00 [196]

You intend to estimate a population mean μ from the following sample. 26.2 27.7 8.6 3.8 11.6 You believe the population is normally distributed. Find the 80% confidence interval.  Enter your answer as an open-interval (i.e., parentheses) accurate to twp decimal places.

Answer:

The  Confidence interval = (8.98 , 22.18)

Step-by-step explanation:

From the given information:

mean = \dfrac{ 26.2+ 27.7+ 8.6+ 3.8 +11.6 }{5}

mean = 15.58

the standard deviation \sigma = \sqrt{\dfrac{\sum(x_i - \mu)^2 }{n}}

the standard deviation = \sqrt{\dfrac{(26.2  - 15.58)^2 +(27.7 - 15.58)^2 +(8.6  - 15.58)^2 + (3.8  - 15.58)^2  + (11.6  - 15.58)^2  }{5 }  }

standard deviation = 9.62297

Degrees of freedom df = n-1

Degrees of freedom df = 5 - 1

Degrees of freedom df = 4

For df  at 4 and 80% confidence level, the critical value t from t table  = 1.533

The Margin of Error M.O.E = t \times \dfrac{\sigma}{\sqrt{n}}

The Margin of Error M.O.E = 1.533 \times \dfrac{9.62297}{\sqrt{5}}

The Margin of Error M.O.E = 1.533 \times 4.3035

The Margin of Error M.O.E = 6.60

The  Confidence interval = ( \mu  \pm M.O.E )

The  Confidence interval = ( \mu  +  M.O.E , \mu - M.O.E )

The  Confidence interval = ( 15.58 - 6.60 , 15.58 + 6.60)

The  Confidence interval = (8.98 , 22.18)

7 0
3 years ago
P(x) = -2x – 2; Find p(-3)
irinina [24]
P(-3)= -2(-3) -2
p(-3)= 6-2
p(-3)= 4
5 0
2 years ago
Read 2 more answers
-20 + 11= Please help if you know what the answer is please show work or explane how you got it?
Travka [436]

Step-by-step explanation:

-20+11

negative and positive sign will change in negative so ans will be=-9

because positive sign is on greater number

6 0
3 years ago
Read 2 more answers
Select linear or nonlinear
seraphim [82]
Linear because i said so
5 0
3 years ago
Read 2 more answers
Given the graph of y=f(x), shown as a red dashed curve, drag the movable blue point to obtain the graph of y=f(x−4)+3.
Sergeeva-Olga [200]

Answer:

See graph in attachment.

Step-by-step explanation:

The graph of y=f(x) is a parabola that has its vertex at the origin.

The equation of the transformed graph is

y=f(x-4)+3

The vertex of this transformed function is

(4,3)

Drag the blue graph up so that the vertex will now be at (4,3).

See graph in attachment.

6 0
3 years ago
Read 2 more answers
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