Ahotel chain recently surveyed 300 new customers and asked them to rate their overall satisfaction with their recent hotel stay. the survey estimated a mean satisfaction of 7 with a standard deviation of 1. if the data are normal distributed, approximately how many new customers gave the hotel a rating of 6,7, or 8? 150 175 o 200 285

200

Step-by-step explanation:

Given : A hotel chain recently surveyed 300 new customers and asked them to rate their overall satisfaction with their recent hotel stay.

The survey estimated a mean satisfaction with a standard deviation .

Let x represents the rating given by customer.

Using formula , .

For x = 6, z= -1

For x= 8 , z=1

The probability that new customers gave the hotel a rating of 6,7, or 8 will be :-

The number of new customers gave the hotel a rating of 6,7, or 8 will be :-

[Rounded to the nearest tens]

Hence, the approximate number of new customers gave the hotel a rating of 6,7, or 8  =200

y > 1/3x

y < = -x + 4

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