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SIZIF [17.4K]
3 years ago
7

PLEASE HELP! In a film study, a sample of 300 movies was found to have an average runtime of 116 minutes with a standard deviati

on of 15 minutes. What is the margin of error for any sample of movie runtimes with 90% confidence (z=1.64)?
Mathematics
1 answer:
BigorU [14]3 years ago
8 0

Answer:

The answer is 1.42!!!!!!

Step-by-step explanation:

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Kate had 50 50 tickets to use for rides at the fair. She lost some of them. Her dad doubled the tickets she had left. Kate wrote
damaskus [11]

Answer: Kate expression: 2(50-t)

2 : represents twice,

50 : represents Initial number of tickets Kate has,

t : The lost tickets

50-t : represents Number of ticket Kate has After loosing t tickets

Jack expression: 100 - 2t

100 : Twice of initial ticket Kate has,

t :  The lost tickets

2t : represents twice of the lost tickets,

100-2t : represents Final number of ticket Kate has.

Step-by-step explanation:

Since, According to the question,

Initially Kate has 50 tickets.

She lost tickets = t

And, after losing t ticket she has tickets = 50 - t

But, His father doubled the amount, Thus she has final tickets = 2(50-t)= 2×50 -2× t = 100 - 2t  



5 0
3 years ago
Read 2 more answers
Y = x - 4<br><br> y = 4x + 2<br><br> x =<br> y =
marshall27 [118]

Answer:

x=-2 y=-6

Step-by-step explanation:

x-4=4x+2

subtract x from both sides

-4=3x+2

subtract 2 from both sides

-6=3x

divide by 3 on both sides

x=-2

y=-2-4=-6

y=4(-2)+2=-8+2=-6

8 0
3 years ago
Please help me!!!!
Greeley [361]
Your process is close!

Since 3/10 and 4/15 is the amount you missed you have to subtract that by 1.

1 - 0.3 = 0.70
1 - 0.26 = 0.74

So, you scored higher on the math quiz.

Hope this helps!
3 0
3 years ago
Why is it helpful to find the mean of the data set?
HACTEHA [7]
The mean of a set of data is the average, so when writing a conclusion or justifying a solution, instead of listing all your data you can say "the average of the data collected was _____"
7 0
3 years ago
Square ABCD is a dilation of square ABCD. What is the scale factor​
gulaghasi [49]

Answer:

\frac{1}{3}

Step-by-step explanation:

2 divided by 6 is \frac{1}{3}

To confirm it,

6 * \frac{1}{3} =2

6 0
3 years ago
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