Question: there are four question in below 8.1.37 5 Question Help a Eighty percent of customers at the snack counter of a movie theater buy drinks.
there are four question in below




8.1.37 5 Question Help a Eighty percent of customers at the snack counter of a movie theater buy drinks. Among those who buy drinks, 20% also purchase popcorn. What's the probability that a customer at the counter buys a drink and popcorn? Theaters use this type of calculation to decide which products should be bundled to appeal to customers. The probability is . (Type an integer or a decimal.) 8.1.36 5; Question Help a A vendor specializing in outdoor gear offers customers three ways to place orders for home delivery. Customers can place orders either in the store, online, or via telephone using a catalog. Of the orders, three-quarters are made online with one-eighth each made in stores or via telephone. Of the online orders, 40% are only for clothing, 30% are only for camping supplies, and 30% are for both. For orders placed in the store, all are for clothing (to order a size that is not in stock). Among orders placed via telephone, 50% are only for clothing, 20% are only for camping supplies, and 30% are for both. Answer parts (a) and (b). (a) Organize these probabilities as a probability table. Purchase Method On-Llne In Store Telephone Total Clothing 0.3' 0.125' 0.0625' 0.4875r Purchase Camping 0.225' 0 0,025'l 0.25' Both 0225' 0 0.0375' 0.26st Total 0.75' 0.125' 0.125' 1.0 (Simplify your answers. Type integers or decimals.) (b) What's the probability that the customer orders clothing, either by itself or in combination with camping supplies? The probability is . (Type an integer or a decimal.) 8.1 .39 EE Question Help 0 Some electronic devices are better used than new. The failure rate is higher when they are new than when they are six months old. For example, one fourth of the personal music players sold by a particular brand have a aw. If the player has the aw, it dies in the rst six months. If it does not have this aw, then only 20% fail in the rst six months. Yours dies after you had it for three months' What are the chances that it has this aw? The probability that it has the flaw is . (Round to three decimal places as needed.) A box of 12 parts contains 5 that are defective. A worker picks parts one at a time and attempts to install them. Find the probability of each outcome in (a) through (d). (a) The first two chosen are both good. 0.3182 (Round to four decimal places as needed.) (b) At least one of the first three is good. 0.9545 (Round to four decimal places as needed.) (c) The first four picked are all good. 0.0707 (Round to four decimal places as needed.) (d) The worker has to pick five parts to find one that is good. (Round to four decimal places as needed.)
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