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Scott
Scott, MIT Graduate
Category: Homework
Satisfied Customers: 17710
Experience:  MIT Graduate (Math, Programming, Science, and Music)
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1. Find the sample mean and sample standard deviation of ...

This answer was rated:

1. Find the sample mean and sample standard deviation of the amount citizens spend per year.

2. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?

3. Find the z/t-values (as appropriate) for a 95% confidence interval and a 92% confidence interval.

4. Find a 95% and a 92% confidence interval for the true mean amount that citizens spend per year.

5. What do you think the lowest possible mean amount spent per year is? Why?

6. Do you think Bob has a good customer base for his new business? Explain

Hi there,

Please post the beginning of the question which tells us the data about Bob's candy store.

Thanks,

Scott

Customer: replied 8 years ago.

Dollars Spent

75

74

80

68

79

85

77

82

79

67

90

72

76

75

69

85

78

79

82

66

75

85

90

76

85

67

89

82

69

79

82

80

84

79

78

81

77

84

80

76

 

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Customer: replied 8 years ago.

THX THIS REALLY HELPS