a manager for an insurance company believes that customers have the following preferences for life insurance products: 20% prefer whole life, 10% prefer universal life, and 70% prefer life annuities. the results of a survey of 200 customers were tabulated. is it possible to refute the sales manager's claimed proportions of customers who prefer each product using the data? product number whole 65 universal 60 annuities 75 step 1 of 10 : state the null and alternative hypothesis.
