Companies that sell stock mutual funds charge their investors expense fees to offset the costs of research and administrative activities. In 2006 the average expense fee as expressed as a percentage of total assets invested in the fund was 0.93%. Assume that the distribution of expense fees is distributed as a normal random variable with a mean of 0.93% and a standard deviation of 0.3%. What proportion of stock mutual funds have an expense fee between 0.75% and 1.25%