3. Manufacturers of photographic equipment have introduced many new easy-to-use cameras, film types and flash equipment

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3 Manufacturers Of Photographic Equipment Have Introduced Many New Easy To Use Cameras Film Types And Flash Equipment 1 (41.09 KiB) Viewed 95 times

3. Manufacturers of photographic equipment have introduced many new easy-to-use cameras, film types and flash equipment in recent years. A new type of flashbulb was tested to estimate the proportion of new bulbs that would produce the required light output at the appropriate time. A random sample of 1000 bulbs was tested and 920 were observed to function according to specifications A. Verify all requirements for a confidence interval are satisfied. B. Find a 99% confidence interval estimate for the true proportion of bulbs functioning according to specifications. C. Interpret the confidence interval above in context of the problem. D. Find a 95% confidence interval estimate for the true proportion of bulbs functioning according to specifications. 4. If we calculate a 95% confidence interval (CI) instead of a 99% confidence interval, then: A. The midpoint and the width of the CI would increase. B. The midpoint of the CI would decrease, but the width would be unchanged. C. The midpoint and the width of the CI would decrease, D. The midpoint of the CI would be unchanged, but the width would decrease, Answer: