U.S. consumers are increasingly viewing debit cards as a convenient substitute for cash and checks. The average amount spent annually on a debit card is $7,010. Assume that the average amount spent on a debit card is normally distributed with a standard deviation of $500. [You may find it useful to reference the z table.) a. A consumer advocate comments that the majority of consumers spend over $8,000 on a debit card. Find a flaw in this statement. (Round your final answer to 4 decimal places.) The proportion of consumers who spend over $8,000 b. Compute the 25th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.) 25th percentile c. Compute the 75th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.) 75th percentile

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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U.S. consumers are increasingly viewing debit cards as a convenient substitute for cash and checks. The average
amount spent annually on a debit card is $7,010. Assume that the average amount spent on a debit card is normally
distributed with a standard deviation of $500. [You may find it useful to reference the z table.)
a. A consumer advocate comments that the majority of consumers spend over $8,000 on a deblt card. Find a flaw in
this statement. (Round your final answer to 4 decimal places.)
The proportion of consumers who spend over $8,000
b. Compute the 25th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal
places.)
25th percentile
c. Compute the 75th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.)
75th percentile
c. Compute the 75th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.)
75th percentile
d. What is the interquartile range of this distribution? (Round your final answer to 2 decimal places.)
Interquartile range
Transcribed Image Text:U.S. consumers are increasingly viewing debit cards as a convenient substitute for cash and checks. The average amount spent annually on a debit card is $7,010. Assume that the average amount spent on a debit card is normally distributed with a standard deviation of $500. [You may find it useful to reference the z table.) a. A consumer advocate comments that the majority of consumers spend over $8,000 on a deblt card. Find a flaw in this statement. (Round your final answer to 4 decimal places.) The proportion of consumers who spend over $8,000 b. Compute the 25th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.) 25th percentile c. Compute the 75th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.) 75th percentile c. Compute the 75th percentile of the amount spent on a debit card. (Round your final answer to 2 decimal places.) 75th percentile d. What is the interquartile range of this distribution? (Round your final answer to 2 decimal places.) Interquartile range
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