im and Cat are two student who decided to get married. the data sets contains the costs of other weddings between students along with the number of people invited to the wedding (called 'attendance' in the table). Wedding Cost Attendance 60700 300 53000 350 45000 150 41000 200 33000 250 32000 150 31000 250 29500 300 27000 250 26000 200
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Jim and Cat are two student who decided to get married.
the data sets contains the costs of other weddings between students along with the number of people invited to the wedding (called 'attendance' in the table).
Wedding Cost Attendance
60700 300
53000 350
45000 150
41000 200
33000 250
32000 150
31000 250
29500 300
27000 250
26000 200
25000 150
23000 200
23000 200
23000 200
20000 200
19000 200
19000 100
18000 150
18000 200
18000 150
18000 100
15000 100
12000 150
5000 50
3000 50
state the null and alternative hypotheses the test.
Determine the 95% confidence
The confidence interval is ____≤ ______ ≤ ______ (round to 3 decimal places)
if Jim and Cat are planning to invite 325 guests, how much should they estimate for the cost of the wedding?
They should estimate $____
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