In a population where the proportion of people who have the ability to taste umami is unknown. a random sample of 100 people were tested and 74 could clearly distinguish umami from saltiness. What is the sample proportion? Also, Create a 99% confidence interval for the true proportion of people in this region who can taste umami. Does this interval support the fact the majority of this region can taste umami? Why or why not and explain using the value of the confidence interva

How can a confidence interval be used to test a hypothesis?

What is the effect on the size of the confidence interval if a T score is used instead of a Z score? OIt has no effect on the interval. OIt causes the interval to be bigger. OIt causes the interval to be smaller.

How can you make a 95% confidence interval smaller without changing the confidence level?

We want to determine if the true proportion of students who consume caffeine is not equal to 35%. We can use a confidence interval to determine this. O True False

We randomly sample 600 people in a specific town. 342 of them like cats. Based on this, construct a 95% confidence interval for the true population proportion of people in this town who like cats. Give your answers as decimals, rounded to four places.

The National Research center conducted a survey of 1000 people to learn about their major international concern.  The survey results showed that 760 of the respondents indicated computer cyber attacks is their major international concern.  Develop a 94% confidence interval for the population proportion of adults who think computer cyber attacks is their major international concern.

High School Band - In most US high schools, students can play an instrument in three types of bands. A random sample of high school band students was taken and the results are summarized in the table below. Instrument type Band Woodwind Brass Percussion type Concert 31 25 8. Jazz 10 16 10 Marching 65 65 27 To assess whether there is a relationship between band type and instrument type, we want to conduct an appropriate hypothesis test. Choose the null and alternative hypothesis? 1. The categorical variables band type and instrument type are independent. Alternative hypothesis 2. The categorical variables band type and instrument type are not independent. Null hypothesis