Management at a local grocery store is seeking your help setting up the appropriate analysis for various research questions that have come up as they prepare for the next scal year. For each research question, determine if the most appropriate statistical analysis technique is conducting a hypothesis test or constructing a condence interval. Then. select the symbol for the corresponding parameter of interest. You should make TWO selections for each question (one for the appropriate statistical analysis technique and one for the corresponding parameter of interest). Question 7 Subquestions 7.a 1 point (5) A large random sample of customers who regularly use curbside pick up and an independent larger random sample of customers who regularly use home delivery services are collected. For each customer, whether or not the customer tipped the service worker will be recorded. This data will be used to estimate the difference in tipping rates when customers use curbside I. pick up versus when customers use home delivery service. : Hypothesis Test : Confidence Interval C p I m - p2 I u : U1 ' H2 7.b . 1 point (5) Paper or plastic? A random sample of 120 customers was selected. For each customer, we recorded whether or not the customer preferred paper bags over plastic. The data will be used to assess if a majority of customers prefer paper bags over plastic bags when checking out. I- Hypothesis Test f 1 Confidence Interval f l f l 'o P1'P2 f l l l 'C lh'llz f l 7.c 1 point(S) Management needs to decide if, on average, customers are spending money on baked goods. A random sample of 60 customers is selected and the amount spent on baked goods is recorded. They will use the data to estimate the average amount of money spent on baked goods among all customers. Hypothesis Test O Confidence Interval UP O P1 - P2 O H1 - H2 7.d 1 point(s) Management is interested in estimating the difference in average savings for customers who use electronic coupons (uploaded to the store's app) versus customers who prefer clipped paper coupons. To estimate this difference, a random sample of 80 customers who use electronic coupons was selected, and an independent random sample of 80 customers who use clipped paper coupons was selected. For each customer, the total savings on their grocery bill was recorded. O Hypothesis Test O Confidence Interval O P O P1 - P2 O H1 - H2 7.e 1 point(S) Management needs to decide if they should continue employing greeters at the door. If at least a quarter of their customers express an improvement in their shopping experience when greeters welcome them to the store, they will continue their greeting program. To determine if they should continue to employ greeters, a random sample of 100 customers will be taken and asked if greeters improve their shopping experience or not. Hypothesis Test O Confidence Interval Op O P1 - P2 O H1 - H2