Question
In a city, 22 coffee shops are randomly selected, and the temperature of the coffee sold at each shop is noted. Use Excel to find the 90% confidence interval for the population mean temperature. Assume the temperatures are approximately normally distributed. Round your answers to two decimal places and use increasing order.
![](https://skilledtutorials.com/wp-content/uploads/2022/11/Solution-MATH225-Week-6-Assignment-Understanding-Confidence-Intervals-Excel.png)
Question
The yearly incomes, in thousands, for 24 random married couples living in a city are given below. Assume the yearly incomes are approximately normally distributed. Use Excel to find the 95% confidence interval for the true mean, in thousands. Round your answers to three decimal places and use increasing order.
![](https://skilledtutorials.com/wp-content/uploads/2022/11/2-Solution-MATH225-Week-6-Assignment-Understanding-Confidence-Intervals-Excel.png)
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