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3 years ago

The chart below shows the number of cakes Jenny bakes each month . What is the mean number of cakes Jenny bakes in a month

2 answers:

8 0

I don't see a chart, but, to find the mean you add all of the values up together and then divide by however many values you added.

For example, if she bakes 5 cakes one month, 7 cakes another month, and 2 cakes a final month, you'd add 5 + 7 + 2 to get 14. Then you'd divide 14 by 3, since you added 3 values together.

If you still need help, post the chart and I'll explain further.

Pepsi [2]3 years ago

7 0

Answer:480

Step-by-step explanation: 460 was in August

320 was in September

440 was in October

560was in November

620 was in December

Add all together: 460+320+440+560+620=2400

2400:5(five months)=480

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Round 105.7 to the nearest whole number

Nady [450]

Answer:

106

Step-by-step explanation:

When the decimal is 5 or greater, we round up. When the decimal is less than 5, we round down. For example, 105.4 would be rounded down to 105 because 4<5

Hope this helped!

4 0

3 years ago

Read 2 more answers

A binomial probability experiment is conducted with given parameters. Compute the probability of x successes in the n independen

snow_lady [41]

Answer:

P(X = 4) = 0.1876

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this question:

$n = 15, p = 0.2$

We want P(X = 4). So

$P(X = 4) = C_{15,4}.(0.2)^{4}.(0.8)^{11} = 0.1876$

7 0

3 years ago

PLS HELP WILL GIVE BRAINLIEST

Naddika [18.5K]

Answer:

y = 1/2x - 1

Step-by-step explanation:

The x value is divided by 2 and then has 1 subtracted from it.

also for future posts, put the question in the title that way people know what you need and can click if they know the answer.

3 0

2 years ago

What is the sum of 1/3 + 5 3/4 as a mixed number in simplest form

mart [117]

6 1/12 would be the answer

Rewriting our equation with parts separated

1/3+5+3/4

Solving the fraction parts

1/3+3/4=?

Find the LCD of 1/3 and 3/4 and rewrite to solve with the equivalent fractions.

LCD = 12

4/12+9/12=13/12

Simplifying the fraction part, 13/12,

13/12=11/12

Combining the whole and fraction parts

5+1+1/12=6 1/12

3 0

3 years ago

"A cable TV company wants to estimate the percentage of cable boxes in use during an evening hour. An approximation is 20 percen

Marizza181 [45]

Answer:

The company should take a sample of 148 boxes.

Step-by-step explanation:

Hello!

The cable TV company whats to know what sample size to take to estimate the proportion/percentage of cable boxes in use during an evening hour.

They estimated a "pilot" proportion of p'=0.20

And using a 90% confidence level the CI should have a margin of error of 2% (0.02).

The CI for the population proportion is made using an approximation of the standard normal distribution, and its structure is "point estimation" ± "margin of error"

[p' ± $Z_{1-\alpha /2} * \sqrt{\frac{p'(1-p')}{n} }$ ]