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
BaLLatris [955]
3 years ago
15

A high school statistics class wants to estimate the average number of chocolate chips in a generic brand of chocolate chip cook

ies. They collect a random sample of cookies, count the chips in each cookie, and calculate a 95% confidence interval for the average number of chips per cookie (18.6 to 21.3).
The next four statements present four different interpretations of these results. Indicate if each interpretation is valid or invalid.

Interpretation #1: We are 95% certain that each cookie of this brand has approximately 18.6 to 21.3 chocolate chips. --ValidInvalid

Interpretation #2: We expect 95% of the cookies to have between 18.6 and 21.3 chocolate chips. --ValidInvalid

Interpretation #3: We would expect about 95% of all possible sample means from this population to be between 18.6 and 21.3 chocolate chips.--ValidInvalid

Interpretation #4: We are 95% certain that the confidence interval of 18.6 to 21.3 includes the true average number of chocolate chips per cookie.ValidInvalid
Mathematics
1 answer:
alexira [117]3 years ago
5 0
Answer:

no

explanation:

no
You might be interested in
For a normal distribution,
Anni [7]

Answer:

1.282, -0.5244,...

Step-by-step explanation:

We know that Z is a standard normal variate with mean =0, and std dev =1

a) z-score separates the highest 10% from the rest of the scores

= 90th percentile = 1.282

b) z-score separates the lowest 30% from the rest of the scores

= 30th percentile = -0.5244

c) z-score separates the lowest 40% from the rest of the scores

= 40th percentile = -0.2533

d) z-score separates the lowest 20% from the rest of the score

=20th percentile = -0.8416

7 0
3 years ago
What is –2c = –c − 4
crimeas [40]

Answer:

c=4

Step-by-step explanation:

–2c = –c − 4

add c to both sides

-1c=-4

divide both sides by -1

c=4

6 0
3 years ago
Read 2 more answers
Would appreciate the help ! ​
aleksandr82 [10.1K]

This is one pathway to prove the identity.

Part 1

\frac{\sin(\theta)}{1-\cos(\theta)}-\frac{1}{\tan(\theta)} = \frac{1}{\sin(\theta)}\\\\\frac{\sin(\theta)}{1-\cos(\theta)}-\cot(\theta) = \frac{1}{\sin(\theta)}\\\\\frac{\sin(\theta)}{1-\cos(\theta)}-\frac{\cos(\theta)}{\sin(\theta)} = \frac{1}{\sin(\theta)}\\\\\frac{\sin(\theta)*\sin(\theta)}{\sin(\theta)(1-\cos(\theta))}-\frac{\cos(\theta)(1-\cos(\theta))}{\sin(\theta)(1-\cos(\theta))} = \frac{1}{\sin(\theta)}\\\\

Part 2

\frac{\sin^2(\theta)}{\sin(\theta)(1-\cos(\theta))}-\frac{\cos(\theta)-\cos^2(\theta)}{\sin(\theta)(1-\cos(\theta))} = \frac{1}{\sin(\theta)}\\\\\frac{\sin^2(\theta)-(\cos(\theta)-\cos^2(\theta))}{\sin(\theta)(1-\cos(\theta))} = \frac{1}{\sin(\theta)}\\\\\frac{\sin^2(\theta)-\cos(\theta)+\cos^2(\theta)}{\sin(\theta)(1-\cos(\theta))} = \frac{1}{\sin(\theta)}\\\\

Part 3

\frac{\sin^2(\theta)+\cos^2(\theta)-\cos(\theta)}{\sin(\theta)(1-\cos(\theta))} = \frac{1}{\sin(\theta)}\\\\\frac{1-\cos(\theta)}{\sin(\theta)(1-\cos(\theta))} = \frac{1}{\sin(\theta)}\\\\\frac{1}{\sin(\theta)} = \frac{1}{\sin(\theta)} \ \ {\checkmark}\\\\

As the steps above show, the goal is to get both sides be the same identical expression. You should only work with one side to transform it into the other. In this case, the left side transforms while the right side stays fixed the entire time. The general rule is that you should convert the more complicated expression into a simpler form.

We use other previously established or proven trig identities to work through the steps. For example, I used the pythagorean identity \sin^2(\theta)+\cos^2(\theta) = 1 in the second to last step. I broke the steps into three parts to hopefully make it more manageable.

3 0
3 years ago
In triangle ABC and triangle XYZ , if angle A and angle B are acute angles such that cos A = cos X then show that angle A = angl
just olya [345]
6x3=18-3=15 Hope it helps.
3 0
3 years ago
On a timer The graph below shows a scatter plot and the line of best fit relating the ages of children and the total number of t
xeze [42]

Answer:

I THINK it's B, could be wrong.

Step-by-step explanation:


6 0
3 years ago
Other questions:
  • What is the answer to 4+4-(5-1)
    12·1 answer
  • Number ten please thanks
    9·1 answer
  • Hello, can someone help me with this problem?
    5·1 answer
  • Which rate is faster:a bird traveling at a constant rate of 2 kilometer per hour or an insect travelinf at a constant rate of 1,
    11·1 answer
  • Is the system of equations is consistent, consistent and coincident, or inconsistent? y=−x+12y=−2x+2 Select the correct answer f
    10·2 answers
  • Lawrence buys his friends candy in the morning for $3 a box, but forgot some of his friends, so he went back to the candy shop a
    11·1 answer
  • Parallel and perpendicular lines ​
    11·1 answer
  • I will give brainliest<3
    8·1 answer
  • Hard question need help My mom is mad please help Middle school will like and give brainliest
    5·1 answer
  • Willa and her friend decide to hang out at her friend’s house after basketball practice on Friday to listen to a new album by th
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!