Surveyed shoppers = 2700
Showed Interest to do business only with large well known retailers = 18% of 2700 = 486
So, Shoppers willing to do business with any size retailers = 2700 - 486 = 2214
11/20 = 55%
hope this helps
The phrase that best completes the student's proof (that quadrilateral ABCD is a parallelogram)? Angle DBC and angle ADB <u>form a pair of alternate interior angles which are congruent.</u> The answer is C.
Answer: The percentage of hotels in the city have a nightly cost of more than $200 is 21%
Step-by-step explanation:
Since the nightly cost of hotels in a certain city is normally distributed,
we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = the nightly cost of hotels.
µ = mean cost
σ = standard deviation
From the information given,
µ = $180.45
σ = $24.02
The probability that a hotel in the city has a nightly cost of more than $200 is expressed as
P(x > 200) = 1 - P(x ≤ 200)
For x = 200,
z = (200 - 180.45)/24.02 = 0.81
Looking at the normal distribution table, the probability corresponding to the z score is 0.79
Therefore,
P(x > 200) = 1 - 0.79 = 0.21
The percentage of hotels in the city have a nightly cost of more than $200 is
0.21 × 100 = 21%
Answer:
Correct option is (A).
Step-by-step explanation:
Let <em>p</em> = proportion of water samples that exceeded the desired pH level.
A sample of size <em>n</em> = 648 is selected. Of these samples <em>X</em> = 62 exceeded the desired pH levels.
The confidence interval for the population proportion is given by:
The MOE or margin of error is estimated difference between the true population parameter value and the sample statistic value.
The information provided is:
MOE = 0.02
Compute the 90% confidence interval for the proportion of water samples that exceeds the desired pH level as follows:
Thus, the 90% confidence interval for the proportion of water samples that exceeds the desired pH level is (8%, 12%).
This confidence interval implies that there is a 90% confidence that the river water exceeds the desired pH level between 8% and 12% of the time studied.
The correct option is (A).