Question

In a marketing survey, a random sample of 980 supermarket shoppers revealed that 272 always stock up on an item when they find that item at a real bargain price.

(a) Let *p* represent the proportion of all supermarket
shoppers who always stock up on an item when they find a real
bargain. Find a point estimate for *p*. (Use 3 decimal
places.)

(b) Find a 99% confidence interval for *p*. (Use 3 decimal
places.)

lower limit | |

upper limit |

(c) What is the margin of error based on a 99% confidence interval?
(Use 3 decimal places.)

Answer #1

**Answer:**

**Given
that:**

**In a marketing survey, a random sample of 980
supermarket shoppers revealed that 272 always stock up on an item
when they find that item at a real bargain price.**

**a.) Let p represent the proportion of all
supermarket shoppers who always stock up on an item when they find
a real bargain. Find a point estimate for p**

**b.) Find a 99% confidence interval for
p.**

Critical value at 99% confidence Interval:(Zα/2)=2.576 (using Standard Normal Table)

99% confidence Interval is given as

**c) What is the margin of error based on a 99% confidence
interval?**

**Margin of Error:**

In a marketing survey, a random sample of 998 supermarket
shoppers revealed that 276 always stock up on an item when they
find that item at a real bargain price.
(a) Let p represent the proportion of all supermarket
shoppers who always stock up on an item when they find a real
bargain. Find a point estimate for p. (Use 3 decimal
places.)
(b) Find a 95% confidence interval for p. (Use 3 decimal
places.)
lower limit
upper limit
(c)...

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to rounding. In
a marketing survey, a random sample of 1018 supermarket shoppers
revealed that 276 always stock up on an item when they find that
item at a real bargain price.
(a) Let p represent the proportion of all supermarket shoppers
who always stock up on an item when they find a real bargain. Find
a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to rounding. In
a marketing survey, a random sample of 1020 supermarket shoppers
revealed that 272 always stock up on an item when they find that
item at a real bargain price. (a) Let p represent the proportion of
all supermarket shoppers who always stock up on an item when they
find a real bargain. Find a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to rounding. In
a marketing survey, a random sample of 1020 supermarket shoppers
revealed that 262 always stock up on an item when they find that
item at a real bargain price.
(a) Let p represent the proportion of all supermarket shoppers
who always stock up on an item when they find a real bargain. Find
a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a marketing survey, a random sample of 1000 supermarket
shoppers revealed that 268 always stock up on an item when they
find that item at a real bargain price.
(a) Let p represent the proportion of all supermarket shoppers
who always stock up on an item when they find a real bargain. Find
a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a marketing survey, a random sample of 1012 supermarket shoppers
revealed that 280 always stock up on an item when they find that
item at a real bargain price.
(a)
Let p represent the proportion of all supermarket
shoppers who always stock up on an item when they find a real
bargain. Find a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a marketing survey, a random sample of 986 supermarket shoppers
revealed that 268 always stock up on an item when they find that
item at a real bargain price.
(a) Let p represent the proportion of all supermarket
shoppers who always stock up on an item when they find a real
bargain. Find a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a marketing survey, a random sample of 982 supermarket shoppers
revealed that 260 always stock up on an item when they find that
item at a real bargain price.
(a)
Let p represent the proportion of all supermarket
shoppers who always stock up on an item when they find a real
bargain. Find a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a marketing survey, a random sample of 1000 supermarket shoppers
revealed that 264 always stock up on an item when they find that
item at a real bargain price.
(a)
Let p represent the proportion of all supermarket
shoppers who always stock up on an item when they find a real
bargain. Find a point estimate for p....

For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a marketing survey, a random sample of 994 supermarket
shoppers revealed that 268 always stock up on an item when they
find that item at a real bargain price.
(a) Let p represent the proportion of all supermarket shoppers
who always stock up on an item when they find a real bargain. Find
a point estimate for p....

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