According to research, holiday shoppers spent an average of $363 over a holiday weekend in 2008. The accompanying data show the amount spent by a random sample of holiday shoppers during the same weekend in 2009. Complete below. E Click the icon to view the data table. a. Retallers were concernea tnat tne recent economic aownturn was going to arect noliday saies. Does tnis sampie support tnese concerns using a = U.TU? Determine the null and alternative hypotheses. Choose the correct answer below. Ο Α. Ho: με 363 and Η : μ < 363 More Info O B. Họ: Hs363 and H,: µ> 363 OC. Ho:H#363 and H,:µ= 363 $425 $268 $363 $240 $224 $215 D O D. Ho: H= 363 and H,: µ# 363 $364 $435 $386 $391 $323 $58 $418 $422 $377 $270 Determine the critical value(s). The critical value(s) is(are). Print Done (Round to three decimal places as needed. Use a comma to separate answers as needed.) Determine the test statistic, t. Click to select your answer(s).
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.
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