Hollywood film producer is working on a new action film. She wants to estimate the true mean length of action films that have appeared in theatres during the past decade. She randomly selects 30 films and records the run time of each. The average time was 119 minutes with a standard deviation of 21.5 minutes. Construct a 95% confidence interval that estimates the true mean length of action films over the past decade. 1. State. We want to construct a % confidence interval for μ =  length of an action film over the past decade. 2. Plan. Name:  Conditions: Random: Randomly selects 30 films 10%: 30 is  10% of the population of all action films in the past

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A Hollywood film producer is working on a new action film. She wants to estimate the true mean length of action films that have appeared in theatres during the past decade. She randomly selects 30 films and records the run time of each. The average time was 119 minutes with a standard deviation of 21.5 minutes.

  • Construct a 95% confidence interval that estimates the true mean length of action films over the past decade.

1. State.

  • We want to construct a % confidence interval for μ =  length of an action film over the past decade.

2. Plan.

  • Name: 
  • Conditions:

    • Random: Randomly selects 30 films
    • 10%: 30 is  10% of the population of all action films in the past decade.
    • Normal/Large sample: 
A Hollywood film producer is working on a new action
film. She wants to estimate the true mean length of action
films that have appeared in theatres during the past
decade. She randomly selects 30 films and records the
run time of each. The average time was 119 minutes with
a standard deviation of 21.5 minutes.
1. State.
We want to construct a
for μ=Γ
film over the past decade.
v% confidence interval
|length of an action
Construct a 95% confidence interval that estimates
2. Plan.
the true mean length of action films over the past
decade.
I Name:
I Conditions:
Random: Randomly selects 30 films
I 10%: 30 is
|10% of the
population of all action films in the past
decade.
I Normal/Large sample:
Transcribed Image Text:A Hollywood film producer is working on a new action film. She wants to estimate the true mean length of action films that have appeared in theatres during the past decade. She randomly selects 30 films and records the run time of each. The average time was 119 minutes with a standard deviation of 21.5 minutes. 1. State. We want to construct a for μ=Γ film over the past decade. v% confidence interval |length of an action Construct a 95% confidence interval that estimates 2. Plan. the true mean length of action films over the past decade. I Name: I Conditions: Random: Randomly selects 30 films I 10%: 30 is |10% of the population of all action films in the past decade. I Normal/Large sample:
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